<<image>>
Brief Type History
Product Support Policy
Availability and Status of Publications
Supply of Manufacturing Drawings
Availability of Spare Parts
Index of TNS
Index of Modifications
Index of Repair Schemes
(click on the red bullet for direct
link to the related subject)
<<yet to be completed>>
Download
or view the Product Support Policy (pdf file - 28 kb)
AVAILABILITY AND STATUS OF PUBLICATIONS
The following publications are available for this aircraft type or series – click the PUBLICATIONS – STATUS AND PRICES button for details. As well as price, also shown is the current amendment status of the relevant publication. You may order from us by using the order form (see below), which should be downloaded, printed off and, when completed, sent by mail or FAX to our contact numbers/address. Alternatively, you can order on-line. For security reasons, details for payment by credit card should be submitted by mail or FAX. For further payment options (e.g. electronic), please click the appropriate button below.
 |
 |
Due to worldwide demand, de Havilland Support
Ltd has initiated new manufacture of the Chipmunk components listed below.
All Parts are supplied with JAA Form One Certification and are available
now. The production run is small and parts will be allocated on a
first come/first served basis. Carriage will be charged at
cost. VAT is payable by customers in EU countries, although
VAT-registered business customers should provide details of their VAT registration
number for VAT-free supply.
| Part Number | Item | Cost (each) |
| DHS1293-06-165 | Ground Steel Pin
(Required for Mod H.269 - qty 2 per ac) |
|
| C1-TR-159 | Rudder Torque Tube Extension Piece
(Required for Mod H.225 - qty 1 per ac) |
|
| C1-TP-313 | Tailplane Attachment Bracket
(Required for Mod H.357 - qty 2 per ac) |
|
| RD-C1-FS-107 | Fuselage Tie Bar (Steel)
(Required for Mod H.288 - qty 1 per ac) |
|
| RC1-FS-192ND | Special Bolts (for Tie Bar) including nuts
and washers
(Qty 10 required per ac) |
|
|
|
The following list shows the Technical News Sheets (TNS) that comprise a current set. This list will be amended from time to time to assist Operators in maintaining an up-to-date list.
News Sheets other than those listed should be removed from the Folder and destroyed.
Future issues of News Sheets will include an instruction to make an addition to this list in the case of a new issue and an alteration to the list in cases of re-issue.
Download
or view the Index of TNS (pdf file - 21 kb)
LIST OF MODIFICATIONS English -Built DHC1 Chipmunk
Series
|
|
Introduction |
|
|
|
|
Record Purposes Only |
Mk21 |
To Introduce Redesigned Fuel
Cock and Longer Operating Lever
|
|
|
Record Purposes Only |
Mk21 |
To Introduce Redesigned Oil
Tank
|
|
|
Record Purposes Only |
Mk21 |
To Delete Oil Drainage Collector
Box and Provide Open Drain
|
|
|
Record Purposes Only |
Mk21 |
To Provide Easy Means of Changing
Perspex Panels on Canopy and Windscreen
|
|
|
Record Purposes Only |
Mk21 |
To Provide Inspection Panels
at Controls and Pipe Joints
|
|
|
Record Purposes Only |
Mk21 |
To Make Detachable Wing Root
End and Tip Ribs to Facilitate Storage and Transport
|
|
|
Record Purposes Only |
Mk21 |
To Reposition Front Rudder
Bar, Improve Control Lever and Make Rudder Lower Hinge more Accessible
|
|
|
Record Purposes Only |
Mk21 |
To Enclose Aileron Control
Sprocket to Prevent Ingress of Foreign Bodies
|
|
|
Record Purposes Only |
Mk21 |
To Improve Accessibility of
Control Box for Inspection Purposes
|
|
|
Record Purposes Only |
Mk21 |
To Provide Phosphor Bronze
Bushes for Undercarriage Torque Links
|
|
|
Record Purposes Only |
Mk21 |
To Provide Separate Fluid
Reservoir for Wheel Brakes
|
|
|
Record Purposes Only |
Mk21 |
To Introduce of Duplicate
Control for VHF
|
|
|
Record Purposes Only |
Mk21 |
To Provide Instrument and
Emergency Lighting
|
|
|
Record Purposes Only |
Mk21 |
To Reposition VHF Aerial from
Rear Fuselage to Underside of Wing
|
|
|
Record Purposes Only |
Mk21 |
To Shorten the Pitot Head
Strut to Prevent Damage
|
|
|
Record Purposes Only |
Mk21 |
To Provide Drainage Facilities
for ASI Pressure and Static Lines
|
|
|
Record Purposes Only |
Mk21 |
To Reposition the Compasses
to Prevent Interference
|
|
|
Record Purposes Only |
Mk21 |
To Provide Cabin Cooling Facilities
|
|
|
Record Purposes Only |
Mk21 |
To Introduce Generator Failure
Warning Lights on Instrument Panel
|
|
|
Record Purposes Only |
Mk21 |
To Provide Ground Equipment
Removable Parts
|
|
|
Record Purposes Only |
Mk21 |
To Provide Fixed Parts on
Airframe for Ground Equipment
|
|
|
Record Purposes Only |
Mk21 |
To Introduce "Coffman" Cartridge
Starter
|
|
|
|
|
To Introduce ‘Z’ type Harness
with Revised Anchorages
|
|
|
|
|
To Introduce Fuel Filter in
Fuel Feed Line to Engine
|
|
|
|
|
To Improve Sealing Between
Fuel Tank and Sump
|
|
|
|
|
To Introduce Instruments with
SAE Cases
|
|
|
|
Mk21 |
To Introduce Carbon Pile Type
of Voltage Regulator in Lieu of Tyrell Type.
Part A: Post Modification
H.61.
Part B: Pre-Modification H.61
|
|
|
|
Mk22, 22A |
To Provide an Approved Protecting
Coating in Battery Compartment. (not required when Mod. H.29 is embodied)
|
|
|
|
Mk20, 21 |
To Improve Venting of Battery
Compartment and Make Holding Down Thumbscrews more Accessible
|
|
|
|
|
To Introduce Blanking Plates
for use of S.A.E. Case Instruments in Existing Panels
|
|
|
|
|
To Introduce ‘Lord’ Mountings
in Series to Permit Increase Deflection of Instrument Panel
|
|
|
|
|
Miscellaneous Amendment
|
|
|
|
|
Miscellaneous Amendment
|
|
|
|
|
To Introduce A.1134A (Interim
Scheme Pending Modification H.36)
|
|
|
|
|
To Introduce Fixed Parts for
TR.1936 VHF Radio on the 170th and Subsequent Aircraft
|
|
|
|
Mk22, 22A |
Radio: To Introduce Removable
Parts for TR.1936 10 Channel VHF Radio in Lieu of TR.1520 or TR.1920
|
|
|
|
Mk22, 22A |
Radio: To Introduce Fixed
Parts for TR.1934 or TR.1936 10 Channel VHF Radio
|
|
|
|
Mk20, 22, 22A |
To Introduce SKF Bearing CBS/2
in Lieu of Torrington Bearing at Rudder Pivot Bracket
|
|
|
|
Mk22, 22A |
To Introduce TR.1520 VHF 4
Channel Radio for ac without TR.1920
|
|
|
|
Mk21 |
To Reposition Hand Brake Lever
Within Easier Reach of Pilot
|
|
|
|
|
To Introduce Redesigned Fuel
Cock Lever
|
|
|
|
|
To Introduce Redesigned Control
in cockpit for ‘Coffman’ Engine Starter
|
|
|
|
|
To Delete Engine Data Plate
in Cockpit
|
|
|
|
|
To Introduce Fuel Tanks with
Redesigned Attachment at Filler
|
|
|
|
|
To Plug or Delete Canopy Plunger
Hole at the 16.1 ins. Position from the Rail Front End
|
|
|
|
Mk21 |
To Redesign Canopy Release
Mechanism to Prevent Wear of Canopy Release Cable and to Provide Hole at
Aft End of Canopy Rail
|
|
|
|
|
To Introduce Standard A Locking
of the Bolts Attaching the Tailplane Attachment Fitting to the Bulkhead
|
|
|
|
|
To Introduce Revised Labels
which Alter the Max Speed at Which Flaps can be Lowered from 74 to 71 Knots
|
|
|
|
|
To Introduce ‘Coffman’ Starter
S7 Mk.2 Embodying Plessey Modification 90
|
|
|
|
|
Miscellaneous Amendment
|
|
|
|
|
Amendment to Chipmunk DIS
|
|
|
|
|
To Introduce Modified Extension
to Rear Engine Driven Fuel Pump Priming Lever (Post Modification GM.1717)
|
|
|
|
Mk21, 22, 22A |
To Simplify Design of Rear
End of Exhaust Manifold
|
|
|
|
|
To Introduce a Vent in Fuselage
Side for Goggle (two stage colour) Demisting
|
|
|
|
|
To Introduce more Robust Canopy
Front Rollers (Superseded by Modification H.173)
|
|
|
|
Mk21, 22, 22A |
To Add Auxiliary Vent Hole
in Fuel Tank Stack Pipe Vent (Superseded by Modifications H.138 & H.207)
|
|
|
|
|
To Introduce Socket for Bowser
Bonding Plug Adjacent to Fuel Filler Cap
|
|
|
|
|
To Introduce Redesigned Sealing
Glands at Throttle and Mixture Control Rods Through Firewall
|
|
|
|
|
To Introduce Undercarriage
Wheel AH.9389 with Improved Fixing for Brake Plate Location Blocks in Lieu
of AH.9126
|
|
|
|
|
To Introduce Revised Protective
Treatment and Finish on Ground Equipment
|
|
|
|
|
To Revise Voltage Regulator
Circuit to Avoid Burning Out Generator (Superseded by Modification H.27)
|
|
|
|
|
To Introduce Strengthened
Attachment Feet for Oil Tank Air Inlet Duct
|
|
|
|
|
To Introduce Rivets to Reinforce
Existing Spot Welds on Both Cockpit Seats
|
|
|
|
|
To Improve the Fixing of Aileron
Mass Balances
|
|
|
|
|
To Introduce Support Strut
for Plessey Cartridge Starter
|
|
|
|
|
To Stiffen Tailplane Attachment
Fittings to Prevent Panting of Front Spar Web
|
|
|
|
|
To Introduce Larger Diameter
Pulleys for Rudder Cables in Centre Fuselage
|
|
|
|
|
Miscellaneous Amendment
|
|
|
|
|
To Lock Positively the Aileron
and Rudder Stop Bolts
|
|
|
|
|
To Introduce Improved Tailplane
Attachment Fittings on Rear Fuselage Bulkhead
|
|
|
|
|
To Provide a Means of Ensuring
that the Canopy Emergency Panel Release Handle is in the "Safe" Position
|
|
|
|
Mk20, 21 |
To Reinforce Oil Tank Mounting
Feet (Interim Scheme Pending Modification H.81)
|
|
|
|
|
To Improve the run of the
Flexible Drive for Tachometer Generator and Introduce Redesigned Fairlead
|
|
|
|
|
To Introduce Redesigned Spinner
A.66870 for Propeller in Lieu of A.66709 (Superseded by Modification H.190)
|
|
|
|
Mk20, 21 |
To Introduce an Improved Tapered
Actuating Rod in Brake Actuator in Lieu of Shouldered Type
|
|
|
|
Mk20, 21 |
To Strengthen Nose Cowl Lugs
|
|
|
|
|
To Introduce Larger Diameter
Pulleys on Rudder Control System in Front and Rear Fuselage and Reduce
Circuit Tension
|
|
|
|
|
To Alter Shape of Slots for
Clips in Undercarriage Leg Fairing (Superseded by Modification H.130)
|
|
|
|
|
To Improve Method of Welding
on Tailwheel Fork
|
|
|
|
|
To Introduce a Test Point
in Vacuum System at Rear of Instrument Panel
|
|
|
|
|
To Introduce Redesigned Oil
Tank with Improved Method of Attachment and Larger Diameter Filler Neck
|
|
|
|
|
To Introduce Redesigned Support
Bracket for Engine Speed Generator Mounting.
Part A: Mod. to Existing Bracket for Retrofit. Part
B: New Bracket for Production and Replacement |
|
|
|
|
To Delete Attachment for Oil
Cooler Inlet Duct at Firewall
|
|
|
|
|
To Introduce Redesigned Mounting
for Socket for Ground Electrical Services
|
|
|
|
|
To Introduce Electric Starter
in Lieu of Coffman
|
|
|
|
|
To Separate the Oil Drain
form the Induction Manifold and to Improve the Induction Manifold Drain
Pipe
|
|
|
|
|
To Strengthen Flanges of Drain
Outlet Assembly at Firewall
|
|
|
|
|
To Introduce 12 Gallon Fuel
Tanks
|
|
|
|
|
To Introduce Fireproof Fairlead
for Cables at Firewall
|
|
|
|
|
To Introduce Steel Fairlead
for Oil Pressure Capillaries at Firewall
|
|
|
|
|
To Introduce Vacuum Gauges
in Both Cockpits
|
|
|
|
|
To Ensure Correct Adjustment
of Undercarriage Torque Links Centre Hinge Joints and to Increase Diameter
of Split Pin on Nut
|
|
|
|
|
To Introduce Redesigned Ratchet
and Pawl for Brake Lever with Improved Hardening on Contact Faces
|
|
|
|
Mk21 |
To Introduce Vent Hole in
Fuel Contents Gauge. CANCELLED
|
|
|
|
|
To Introduce Longer Oil Tank
Vent Hose
|
|
|
|
|
To Introduce a Strengthened
Outer Elevator Hinge Bracket and Longer Attachment Bolts
|
|
|
|
|
To Introduce a Stop in the
Control Box for Wheel Brake Actuating Lever
|
|
|
|
|
To Introduce Oil Cooler Blanking
Plate
|
|
|
|
Mk20, 21 |
To Strengthen Top Nose Cowl
Attachment
|
|
|
|
|
To Introduce Strengthened
Two-Stage Flying Practice Screens. Part A: Fixed Fittings. Part B: Amber
Screens
|
|
|
|
|
To Introduce Bonding on Airframe
Control Surfaces
|
|
|
|
|
Not Allocated
|
|
|
|
|
Miscellaneous Amendment
|
|
|
|
|
To Introduce Extended Chord
Rudder
|
|
|
|
|
To Introduce Pren Type Cables
for Aircraft Electrical Services
|
|
|
|
|
To Reinforce Flange and Edge
of Oil Cooler Air Scoop
|
|
|
|
|
To Introduce Watch Holder
Stores Ref: 6A/1465 in Front & Rear Cockpits
|
|
|
|
|
To Improve the Hot and Cold
Carburettor Air Intake Control
|
|
|
|
|
To Introduce Wiring to Provide
Electrical Heating for the Pitot Head (Post-modification H.27)
|
|
|
|
|
To Introduce Two-Stage Blue
Flying Practice Screens
|
|
|
|
Mk22, 22A |
To Introduce TR.1934 Aerial
Type 228 in Lieu of TR.1936 and Aerial Type 226 (Superseding Modification
H.36)
|
|
|
|
|
To Introduce Plessey PTR61
Mk.2 VHF Radio with Dual Control
|
|
|
|
|
To Correct External Fuel Markings
Adjacent to Filler Cap
|
|
|
|
|
Part A: To Introduce 1 Gallon
Drinking Water Tank with Fixed Stowage. Part B: To Introduce Stowage for
Signalling Strips
|
|
|
|
|
To Introduce Long Range Fuel
Tank
|
|
|
|
|
To Introduce an Additional
Ratchet Plate to "Double up" the Bearing Surface for Pawl on Flap Lever
|
|
|
|
|
To Introduce a Strengthened
Bolt Plate for Engine Mounting at Stabilising Struts
|
|
|
|
|
To Introduce a Hole in Nose
Cowl for Rocker Box Cooling
|
|
|
|
|
To Introduce Heavier Gauge
Rear Tubular Member on Canopy Frame
|
|
|
|
|
To Introduce Strengthened
Pulley Mounting Bracket in Fuselage for Flap Controls
|
|
|
|
|
To Replace Light Alloy Bracket
by Steel for Strut Attachment at Tailplane Rear Spar
|
|
|
|
|
To Decrease the Pitch of Rivets
for Stringers in Top Skin of Main Plane in Area Directly Outboard of Tank
Bay
|
|
|
|
|
To Introduce Redesigned Rear
Roller Attachment Bolt and Washer for Canopy (Partly Superseded by Modification
H.182)
|
|
|
|
|
To Delete Spring-loaded Non-return
Valve Part. No.s SPE170 from Fuel System Replace by SPE1183 (Non-Spring-Loaded
Type) (Superseded by Modification H.165)
|
|
|
|
|
To Strengthen the Attachment
of Rudder Fairings and Tail Cone
|
|
|
|
|
To Reposition Fuel System
Non Return Valves to Improve Accessibility
|
|
|
|
|
To Introduce ‘Investment’
Cast Flange for Exhaust Manifold
|
|
|
|
|
To Prevent Fixing Bolt Rotating
in Torque Link Lugs on Undercarriage
|
|
|
|
|
To Introduce Stiffened Rudder
Pedal
|
|
|
|
|
To Introduce a Redesigned
Undercarriage Compression Leg Fairing
|
|
|
|
|
To Reposition Ground/Flight
Switch
|
|
|
|
|
To Redesign Attachment of
Knurled Nuts at Top of Dashboard
|
|
|
|
|
To Reinforce Canopy Rear Tubular
Member (for Retrospective Application Pending Introduction of New Canopies
to Modification H.119)
|
|
|
|
|
To Introduce Redesigned Shock
Absorber for Tailwheel
|
|
|
|
|
To Introduce Improved Method
of Adjustment for Friction Device in Tailwheel.
Part A: Using Existing Spindle. Part B: Using Longer
Spindle |
|
|
|
|
To Provide a Strengthened
Tailwheel Yoke & Provide Increased Clearance at Tail Cone
|
|
|
|
|
To Reduce the Maximum Quoted
Diving Speed from 173 to 155 knots
|
|
|
|
|
To Introduce Improved Type
of Fuel Tank Vent (Superseded by Modification H.207)
|
|
|
|
|
To Introduce a Stiffener at
Fuel Filter Mounting on Firewall (Superseded by Modification H.181)
|
|
|
|
|
To Introduce Switch Type 896
(with spring loaded toggle) in Lieu of Switch Type 170 in "Press to Mute"
Circuit in VHF Rear Control Box. CANCELLED
|
|
|
|
|
To Obtain more Clearance for
Rudder Bar Throughout its Movement to Avoid Rudder Jamming
|
|
|
|
|
To Reposition Oil Pressure
Gauge Capillaries from Engine to Bulkhead
|
|
|
|
|
To Introduce Plessey Fireproof
Cover for Cartridge Starter
|
|
|
|
|
To Introduce Suppressor Type
Y1 in Lieu of Type H No.2
|
|
|
|
|
To Introduce Protective Covers
for Wheels
|
|
|
|
|
To Improve Attachment of Lower
Engine Support Fittings to Fuselage. Part A: Retrofit. Part B: Present
Production using Countersunk Parts. Part C: Future Production using New
Parts.
|
|
|
|
|
To Introduce 1.0" Wide Lassovic
PVC Adhesive Tape to Fuselage in the Vicinity of Wing and Empennage Fairings
|
|
|
|
|
To Introduce Wire Mesh Screen
and Retaining Unions in Suction Line of Vacuum System
|
|
|
|
|
To Introduce Redesigned Elevator
Central Hinge Fitting with Bosses and Centre Bolt in Lieu of Pin. Part
A: Retrofit. Part B: Production
|
|
|
|
|
To Prevent Draught Entering
Rear Cockpit
|
|
|
|
|
To Introduce Improved Assembly
of Flap Operating Link
|
|
|
|
|
To Introduce Marker Beacon
BC.1033 and Range Receiver BC.453
|
|
|
|
|
To Introduce Downward Identification
Lamp Type ‘D’ (Amber) on Port Side of Aircraft and Delete Existing Lamp
from Starboard Side
|
|
|
|
|
To Introduce Fixed Parts for
STR 9x 10 Channel VHF Radio
|
|
|
|
|
To Introduce Removable Parts
for STR 9x 10 Channel VHF Radio
|
|
|
|
|
To Introduce Mounting Assembly
Type 873/2 and Improve Clearances around VHF Radio (when 10 Channel VHF
is fitted)
|
|
|
|
|
To Continue the Existing Slot
in the Canopy Rail though the Rear Fairing
|
|
|
|
|
To Introduce Suction Connection
Type D Stores in Lieu of Type A for the Turn and Slip Indicator
|
|
|
|
|
To Insulate Soldered Tags
for Bulb Holder in VHF Control Box
|
|
|
|
|
Additional Night Flying Equipment
to Meet ARB Requirements
|
|
|
|
|
To Introduce Air Speed Indicator
Smiths Type 167.AS Calibrated 30 - 210 Knots in Lieu of Type 159.AS 20
- 210 Knots
|
|
|
|
|
Part A: To Introduce Patch
Plates for Cut-Outs on Spinner. Part B: To Introduce Clearance Holes to
Spinner Nose and Adhesive Tape to Base
|
|
|
|
|
To Introduce Redesigned Bracket
for Rudder Bar with Improved Ball Race Housing
|
|
|
|
|
To Introduce Smiths Fuel Gauge
1632 FG Fitted with Luminous Dial FG 5024
|
|
|
|
Mk20, 21 |
To Introduce Non-return Valve
Type SPE N375 Mk 1 in Lieu of Type SPE 1183 (Superseded by Modification
H.199)
|
|
|
|
Mk20, 21 |
To Reinstate Switch Type 170
in Press-to-Mute Circuit
|
|
|
|
|
To Introduce a Stronger Internal
Reinforcing Bracket and Internal Gusset Plate on Tailplane at Shock Absorber
Strut Attachment
|
|
|
|
|
To Introduce Hoffman Self-Aligning
Bearing N.1156 in Lieu of SKF 13303 in Elevator Connecting Rod (under rear
seat)
|
|
|
|
|
To Ensure Correct Adjustment
of Brake Levers
|
|
|
|
|
To Improve the Attachment
of Aileron Sprocket to Vertical Pivot Tube
|
|
|
|
|
To Substitute Shackle Pin
in Lieu of Bolt at Front Pilots Shoulder Strap Attachment
|
|
|
|
|
To Obviate Chafing Between
Canopy Leading Edge and Windscreen Mask
|
|
|
|
|
To Change Front Canopy Rollers
to Sliding Blocks
|
|
|
|
|
To Introduce Range Receiver
BC.453
|
|
|
|
|
Miscellaneous Amendment
|
|
|
|
Mk20, 21 |
To Introduce a Spring Over-riding
Device in Brake Control Circuit. CANCELLED
|
|
|
|
|
To Provide Close Tolerance
Bolt in Lieu of Standard at Front Wing to Fuselage Joint
|
|
|
|
|
To Introduce Reinforcing for
Fin Post (when Mod H.104 is Embodied)(53 ac only)
|
|
|
|
Mk22, 22A |
To Introduce Transfer for
External and Internal Markings
|
|
|
|
Mk20, 21 |
To Introduce Improvements
in Brake Circuit to Actuators
|
|
|
|
|
To Introduce Improved Method
of Mounting Fuel Filter
|
|
|
|
|
To Introduce a Square Slide
in Lieu of Roller at Rear of Canopy
|
|
|
|
|
To Provide Additional Treatment
and Drainage Holes for Flap Inner Hinge Brackets
|
|
|
|
Mk22, 22A |
To Introduce Turn & Slip
Indicator Ref: 6A/3371 in Lieu of 6A/2676
|
|
|
|
|
To Introduce an Improved Distance
piece at Aileron Outer Hinge
|
|
|
|
|
To Introduce Nose Cowl Reinforcing
|
|
|
|
|
To Introduce Reinforcing on
RH Corner of Cowling Undershield
|
|
|
|
|
To Introduce Fuel Feed Pipe
in Tungum in Lieu of Aluminium Between Cock & Fuel Filter
|
|
|
|
|
To Introduce Compass Deviation
Card Holder Mk 4 in Lieu of Mk 3
|
|
|
|
Mk20, 21 |
To Introduce Spinner A.66912
Mk 5 in Lieu of A.66870 Mk 4
|
|
|
|
|
To Introduce a Loading Label
in Luggage Locker
|
|
|
|
|
To Introduce Guard over Muting
Switch on Radio Control Box in Rear Cockpit
|
|
|
|
|
To Introduce Improvements
in Carburettor Heater System
|
|
|
|
|
To Introduce Shorter Distance
tubes for Front Engine Mounting Shear Rubber Assemblies
|
|
|
|
|
To Introduce Modified Engine
Mounting with Improved Bearing Face for Front Shear Rubber
|
|
|
|
|
To Introduce Plessey PTR 61F
6-Channel VHF Radio with Associated Controls and Wiring (replaces Mod.
Chipmunk H.112)
|
|
|
|
& T Mk10 |
Gliding Towing Gear - To Introduce
Glider Towing Facilities (See also H.121 & H.167)
|
|
|
|
|
Mainplane: To Improve Fixing
of Fabric to Wing
|
|
|
|
|
Fuel System: To Introduce
Improved Non-return Valve SPE 1957 in Lieu of SPE 1747
|
|
|
|
|
Oil System: To Introduce Improved
Washer for Oil Tank Filler Cap
|
|
|
|
Mk20, 21 |
External Marking: To Introduce
82 Avgas Fuel and Markings (supersedes H.113) CANCELLED
|
|
|
|
|
To Introduce Modified Instrument
Panels for Uruguayan Air Force
|
|
|
|
|
To Introduce Labels in Spanish
for the Uruguayan Air Force. CANCELLED
|
|
|
|
Mk20, 21 |
Electrical: To Introduce Two
Unipren 6 Cables in Lieu of Dupren 6 Cable. CANCELLED
|
|
|
|
|
To Permit the use of 9 Gallon
Fuel Tanks in Lieu of 12 Gallon on Conversion from T Mk10 to Mk21. Cancelled
10.09.54
|
|
|
|
|
Engine Controls: To Introduce
Redesigned Throttle Rods
|
|
|
|
|
Fuel System: To Introduce
Balance Type Vents (supersedes H.138)
|
|
|
|
Mk22, 22A |
Electrical: To Introduce Sea
Grey Plastic Caps on Single Pole Switches in Cockpit
|
|
|
|
|
Radio: To Introduce Flexibly
Mounted Aerial
|
|
|
|
22, 22A |
Fuel Vent: To Introduce a
Deflector on Rear Fuselage Underside to Prevent Fuel Entering Cockpit through
Access Door
|
|
|
|
22, 22A |
Electrical: To Introduce Suppressor
Type Y1 in Lieu of Type H No. 2
|
|
|
|
|
Fuel Vent: To Seal the Vent
Fairing to Pre-vent possible Entry of Fuel Draining from Vent Pipes into
Fuselage After Flying Inverted
|
|
|
|
|
Fuselage: To Introduce Engine
Data and No Smoking Labels, Name Plate and Weight Schedule
|
|
|
|
|
Cockpit: To Prevent Brake
Lever from Fouling Pilots Leg (Incorporating DOI 14484)
|
|
|
|
|
Braking System: To Introduce
Header Tank and Pipe Line. Cancelled by H.245
|
|
|
|
|
Engine Installation: To Prevent
the Possibility of Gaps Between Firewall and Fuselage
|
|
|
|
|
Fuel System: To Introduce
Socket for Latest Bowser Bonding Plugs
|
|
|
|
|
Elevator: To Introduce Strengthened
Nose Ribs at Outer Hinge
|
|
|
|
|
Vacuum System: To Introduce
a Vacuum Gauge on Front Cockpit Dashboard
|
|
|
|
|
Fuel System: To Modify Fuel
Gauge with New Dial and Luminous Markings for Night Flying
|
|
|
|
|
Cartridge Starter: To Introduce
Type ‘SA’ Breech in Lieu of Type ‘S’
|
|
|
|
|
Ground Equipment: To Introduce
Modified Incidence Board for Tailplane
|
|
|
|
|
Rear Fuselage: To Introduce
Improved Attachment to Tailwheel Yoke
|
|
|
|
|
Cartridge Starter: To Introduce
‘SA’ Breech and Flameproof Cover in Lieu of ‘S’ Breech and Flameproof Cover
CK3896
|
|
|
|
|
Tail Unit: To Introduce Strengthened
Extension Piece Rudder Torque Tube
|
|
|
|
|
Radio: To Introduce Mic-Tel
Connector Type 10318 to TR.1920 and TR.1520 Radio Installation. Cancelled
|
|
|
|
|
Electrical: To Introduce Flashing
Navigation Lights. CANCELLED
|
|
|
|
|
Electrical: To Improve Bonding
of Rudder to Fuselage
|
|
|
|
& T Mk10 |
Wing Root Rib: Improvement
at Flap Operating Pulley Housing Mounting
|
|
|
|
|
Tailplane Rear Spar: To Increase
Chamfers on Elevator Hinge Brackets
|
|
|
|
|
To Introduce Anti-spin Strakes
to Rear Fuselage
|
|
|
|
|
Engine Controls: To Introduce
Re-designed Spring for Throttle and Altitude Control Rod End (pre and post
modification H.206). Not used. See Modification H.236
|
|
|
|
|
Fuel Tanks: Improved Water
Drainage
|
|
|
|
Except T Mk10 |
To Introduce Shouldered Bolt
at Pivot Points on Rudder Bars for Inter-Connecting Rod
|
|
|
|
|
To Provide Artificial Horizon
6A/1498, 6A/3290 or 6A/3827 as Alternatives to 6A/1519
|
|
|
|
|
Engine Controls: To Delete
Alternative Ball Joint, Spring and Cup on Engine Throttle Control Rod
|
|
|
|
|
Fuel System: To Mark Direction
of Flow on All Pipe Lines and on Components where Incorrect Assembly of
Components is Possible
|
|
|
|
|
To Introduce Agricultural
Chipmunk Mk 23
|
|
|
|
|
To Introduce Spray Gear for
Chipmunk Mk 23
|
|
|
|
|
To Introduce Check Cable at
Position of Flap Control Return Spring
|
|
|
|
|
To Introduce Additional Stiffening
at Forward Fuselage Side Panels
|
|
|
|
& T Mk10 |
To Introduce Revised Battery
Drain Pipes
|
|
|
|
|
Introduction of Modified Crop
Spraying Gear (G-APOS only)
|
|
|
|
& T Mk10 |
To Introduce Shorter Snubber
For Rear Engine Mounting Shear Rubber Assemblies
|
|
|
|
|
Brake System: To Reposition
Header Tank and Piping Forward of Firewall (Cancels H.215)
|
|
|
|
|
Engine Installation: To Introduce
Slow Running Cut-out
|
|
|
|
|
To Introduce Revised Position
of Propeller Relative to Crank Webs
|
|
|
|
& T Mk10 |
To Revise Attachment Bolt
at Flap Hinge Fitting at STN 60
|
|
|
|
|
Mainplanes: Introduction of
Steel Wing Root Fittings. CANCELLED
|
|
|
|
|
Electrical: To Introduce Re-routed
Wiring to Pitot Head Heater in Port Mainplane
|
|
|
|
|
Elevator Rear Layshaft: Introduction
of Improved Stops
|
|
|
|
& T Mk10 |
Firewall: To Introduce Packings
Under Oil Tank Supports
|
|
|
|
|
Fuselage: To Introduce Bristol
Canopy with Bristol Flap Modification. CANCELLED
|
|
|
|
& T Mk10 |
Engine Cowling: To Introduce
Glass Fibre Lower Nose Cowl Section Part No. FRDA 52473 in Lieu of Metal
Lower Nose Cowl Section Part No. C1-EC 79A/2
|
|
|
|
& T Mk10 |
Elevator Rear Layshaft: To
Introduce Strengthen Bracket Part No. C1-CF 563A/2 in Lieu and By Conversion
of C1-CF 563A/1
|
|
|
|
|
Miscellaneous: To Introduce
Revised Fire Extinguisher. Cancelled and Replaced by Modifications H.258
& H.259
|
|
|
|
|
Wireless Equipment: To Introduce
Lightweight UHF TR ARI 18197/1. Cancelled and Replaced by Modification
H.263
|
|
|
|
& T Mk10 |
To Delete Stowage for Two-Stage
Amber Screens
|
|
|
|
& T Mk10 |
To Make Provision for and
Introduce Fire Extinguisher 27N/299 in Lieu of 27N/12 and Bracket 27N/149
in Lieu of 27N/13 (Supersedes H.256)
|
|
|
|
& T Mk10 |
Undercarriage: To Introduce
Mainwheel Part No. AH.51981 in Lieu of AH.9389
|
|
|
|
& T Mk10 |
Controls: To Introduce Latch
Plate Part No. C1-CF 1489 in Lieu of Latch Plate PC. No. C1-CF 1133A for
Flap Control Lever (Superseded by H.272 then H.273)
|
|
|
|
& T Mk10 |
Engine Mounting: To Introduce
Larger Vent and Drain Holes in Tubular Structure. Part A: New Spares. Part
B: Retrospective Action
|
|
|
|
|
Wireless Equipment: To Introduce
PTR170 Radio in Lieu of Existing VHF
|
|
|
|
& T Mk10 |
Controls: To Introduce Eye-end
Adjuster Screw C1-CF 1491 and Turnbuckle C1-CF 1493 in Lieu of Eye-end
Adjuster Screw C1-CF 1169 and Turnbuckle AS.2906 on Wheelbrake Control
Cable
|
|
|
|
& T Mk10 |
Instrument Installation: To
Introduce and Make Provision for Mk.14 Fatigue Meter 6A/6487 and Air Speed
Switch
|
|
|
|
|
Fire Extinguisher: To Introduce
a Guard Plate Over the Quick Release Mechanism of Fire Extinguisher Mounting
Bracket Type 27B (Graviner)
|
|
|
|
& T Mk10 |
Alighting Gear: To Introduce
Tailwheel Shock Strut Part No. C1-UT-189A in Lieu of C1-UT-131A.
|
|
|
|
& T Mk10 |
Fuselage: To Introduce HTS
Gusset Plates in Lieu of Aluminium Alloy Gussets at the Top Centre Structure
of Front Fuselage
|
|
|
|
|
Aerofoils: To Introduce HTS
Pins in Lieu of Aluminium Alloy Rivets for Securing the LH & RH Elevator
Interconnecting Flanges to Torque Tubes
|
|
|
|
& T Mk10 |
Alighting Gear: To Introduce
Special Bolt Part No. C1-UT-197 in Lieu of C1-20-UT9 on Tailwheel Yoke
Assembly
|
|
|
|
|
Miscellaneous: To Introduce
Special Fluorescent Paint Scheme for Royal Navy Chipmunk T Mk.10 Aircraft
|
|
|
|
|
Controls: To Introduce Revised
Latch Plate and Quadrant. Modification Cancelled see H.273
|
|
|
|
Mk22, 22A |
Controls: To Introduce Flap
Control Lever Quadrant Assembly Part No. C1-CF 731A/2 in Lieu and by Conversion
of C1-CF 731A/1
|
|
|
|
|
Fuel System: Installation
of Fuel Filter Type LF1/3 (Hymatic). CANCELLED
|
|
|
|
& T Mk10 |
Alighting Gear: To Introduce
Special Bolt Part No. C1-UT 199 in Lieu of Standard Bolt A.25-66G on Tailwheel
Yoke with Glider Towing Attachment
|
|
|
|
& T Mk10 |
To Introduce Tailcone Assembly
Part No. C1-FS1801A in Lieu and by Conversion of Part No. C1-FS 647A/1
|
|
|
|
& T Mk10 |
Engine Installation: To Introduce
Rear Manifold Assembly Part No. C1-E99A/ND and Clip Part No. C1-EE 101
in Lieu of Rear Manifold Assembly Part No. C1-EE 81A/ND. Part A: New Manufacture.
Part B: Retrospective Action
|
|
|
|
& T Mk10 |
Fuselage: To Introduce Tailcone
Assembly Part No. C1-FS 1871A/ND in Lieu and by Conversion of Part No.
C1-FS 158A/ND
|
|
|
|
|
Alighting Gear: To Introduce
Mainwheel AH51981 in lieu and by Conversion of AH9389. Dunlop Modification
4179. CANCELLED
|
|
|
|
Mk22, 22A |
Controls: To Introduce Cable
Guard Part No. C1-CF 1507A in Lieu of Cable Guard Part No. C1-CF 1171
|
|
|
|
& T Mk10 |
To Introduce Reinforced Ribs
and Modified Rib to Front Spar Attachment Angles in Centre Tailplane Structure
|
|
|
|
& T Mk10 |
Fuselage: To Introduce Attachment
of Fire Extinguisher Mounting Bracket
|
|
|
|
& T Mk10 |
Fin: To Introduce Rib Support
Angle C1-TF 101A in Lieu of C1-TF 35A. Part A: New Production. Part B:
Retrospective Action
|
|
|
|
& T Mk10 |
Fuselage: To Introduce a Strengthened
Lower Portion of Former No. 1 Part No. C1-FS.1821 in Lieu of C1-FS 319
|
|
|
|
Mk22, 22A |
Engine Installation: To Re-run
the Slow Running Cut-off Cable and Re-position the Pull Ring Mounting Bracket.
Part A: Pre Mod H.263. Part B: Post Mod H.263
|
|
|
|
& T Mk10 |
Oil System: To Introduce Oil
Tank Part No. C1-LT 347A in Lieu and by Conversion of C1-LT 323A
|
|
|
|
|
Not Allocated
|
|
|
|
& T Mk10 |
Fuselage: To Introduce a Steel
Tie Bar in Lieu of a Light Alloy Tie Bar at Bottom Boom of Centre Section
Spar
|
|
|
|
& T Mk10 |
Aerofoils: To Introduce Steel
Wing Root Insert Fittings in Lieu of Light Alloy Fittings at Bottom Boom
of Wing
|
|
|
|
& T Mk10 |
Aerofoils: Replacement of
Inboard Portion of Lower Spar Boom
|
|
|
|
Mk22, 22A |
Electrical Equipment: To Introduce
a Remote trimmer Resistance Ref: No. 5UC/5210 in Lieu of 5UC/5780 in the
Voltage Regulator Circuit
|
|
|
|
|
Fuselage, Cockpit: To Make
Provision for Restraint Harness Part No. MR1-GQ-716 in Front and Rear Cockpits
in Lieu of 6F/246 (Front) and 6F/245 (Rear)
|
|
|
|
|
Airframe: To Introduce Modified
External Paint Scheme
|
|
|
|
|
Aerofoils: To Introduce Rudder
Part No. C1-TR 157A/2 in Lieu and by Conversion of C1-TR 157A/1
|
|
|
|
|
Aerofoils: To Introduce Elevator
Part No. C1-TE-1/3 in Lieu and Conversion of C1-TE-1/2 and C1-TE-2/2
|
|
|
|
|
Controls: To Introduce Rear
Rudder Bar Assembly Part No. C1-CF 69A/4 in Lieu and by Conversion of C1-CF
69A/3
|
|
|
|
& T Mk10 |
Engine Installation: To Introduce
Adjusting Sleeve Part No. C1-E573 in Lieu of Part No. C1-E 162 for Engine
Mounting Rear Foot
|
|
|
|
|
Miscellaneous: To Introduce
Improved Protection to the Fuselage Battery Compartment. Withdrawn in Favour
of H.309
|
|
|
|
Mk22, 22A |
Engine Installation: To Introduce
Revised End Connections for Carburettor Hot/Cold Air Control Cables
|
|
|
|
Mk22, 22A |
External Finish: To Introduce
Revised External Colouring and NATO Markings for Royal Navy Aircraft (superseding
Mod H.271)
|
|
|
|
Mk22, 22A |
Flying Controls: To Introduce
Larger Diameter Pulley Part No. C1-CF.271 for Flap Control Cable at Wing
Root Rib
|
|
|
|
Mk22, 22A |
Engine Installation: To Reposition
the Engine Speed Indication Generator (A/780) to Provide Improved Routing
of Flexible Drive (6A/1504) (Superseding Mod H.82 for Mk.10)
|
|
|
|
|
To Introduce a Warning Indication
of Starter Relay Failure (Post H.85)
|
|
|
|
|
Electrical: To Introduce Battery
Type J Ref No 5J/9496080 in lieu of Type C ref no 5J/3200. Superseded by
Modification H.309
|
|
|
|
|
To Introduce 2 Monobloc Battery
Sections (Varley Part No. 12 19/25) in Lieu of Batteries Type C
|
|
|
|
|
Flying Controls: To Introduce
Rudder Control Hinge Bracket Part No. C1-TF 71/1 in Lieu of C1-TF 71
|
|
|
|
Mk22, 22A |
External Finish: To Introduce
Revised External Colour Scheme (Red/White/Grey)
|
|
|
|
|
Electrical: Introduction of
Revised Wiring. CANCELLED
|
|
|
|
Mk22, 22A |
Fuselage Structure: To Make
Provision for and Introduce Battery Type J in Lieu of Battery Type C by
Extending the Battery Compartment (Enhanced Version of Civil Modification
H.305)
|
|
|
|
|
Wings: To Introduce Undercarriage
Leg Mounting Casting Part No. C1.W 1023 and C1.W 1024 in Lieu of Part No.
C1-W 639 and C1-W 640
|
|
|
|
Mk22, 22A |
Fuel System: To Introduce
Drain Valve Vickers Type A.5268 Mk.B in Lieu of Plug Part No. 4 PT 123
for the Fuel Tank Sump Drain
|
|
|
|
|
Fuselage: To Introduce Reinforcement
to Former at Lower Cowling Attachment Bracket (Post Modification H.284)
|
|
|
|
RN Only |
Radio: Introduction of PTR
170 UHF. Covered by Modification H.263
|
|
|
|
|
To Introduce Hoffmann Wood
Propeller Part No. HO 21HM 198B/140L, Spinner Part No. FP 3037 and Back
Plate Part No.3038 in Lieu of Fairey Metal Propeller etc.
|
|
|
|
Mk22, 22A |
Miscellaneous: To Introduce
a Guard for the Rear Cockpit Ignition Switches
|
|
|
|
Mk22, 22A |
Radio: To Introduce Connector
Type 10318 for Mic-tel Headsets and to Delete Redundant Socket Type 359
|
|
|
|
|
To Introduce New Tailwheel
Two-track Tyre (Part No. Dunlop DA 2435) in Lieu of Existing Part No. DS
13420
|
|
|
|
|
Introduction of Shell Fuel
Carnet Holder. Requirement Withdrawn by MOD
|
|
|
|
Mk22, 22A |
Miscellaneous- To Introduce
Accelerometer to Front Cockpit Coaming
|
|
|
|
Mk22, 22A |
Fuselage - To Make the Glider
Tow Facilities Quickly Detachable
|
|
|
|
|
Introduce Collins 618-1C VHF
Radio Equipment in Lieu of Type STR 9X Equipment
|
|
|
|
|
Engine Installation: To Introduce
Angled Fairlead Pt No C1-E585A in lieu of Straight Fairlead Pt No C1-E575A
for ESI Flexible Drive. Incorporated with Modification H.302
|
|
|
|
|
To Introduce Aerobatics and
Spin Prohibited Label (Pre-Modification H.231)
|
|
|
|
|
To Introduce Spin Recovery
Advisory Label (Post-Modification H.231)
|
|
|
|
Mk22, 22A |
To Introduce Pitot-static
Pipe Clipping in Rear Cockpit
|
|
|
|
G-BARS |
To Introduce Structural and
Electrical Changes to Modification H.321 To Suit Aircraft C1-0557
|
|
|
|
|
Radio: To Introduce a Press-to-Mute
Facility in the Front Cockpit
|
|
|
|
Mk22, 22A |
To Introduce Velcro Fastening
to Ends of Adjustable Shoulder Straps in Lieu of Stitching
|
|
|
|
Mk22, 22A |
To Introduce Bendix RT 221
with VHF TR 1936 B Retained
|
|
|
|
|
Beacons: To Introduce Whelen
Strobe-type A413 HD Anti-Collision Light
|
|
|
|
(G-BARS) |
To Introduce Collins 20 VHF
Radio Equipment in Lieu of 618F-1C Equipment
|
|
|
|
Mk22, 22A |
To Introduce VHF Communications
Equipment Marconi AD120 in Lieu of Existing TR 1900 Series Equipment
|
|
|
|
|
External Finish: To Introduce
Colour Coding and Symbols at Fuel Filler Cap Positions and Revised Colours
for Propeller. CANCELLED.
|
|
|
|
|
To Introduce I/C-R/T Switches
on Control Columns
|
|
|
|
(AAC Only) |
To Introduce UHF Stand-by
Radio D403 (ARI 23159). Part A: Fixed Fittings. Part B: Removable Fittings
|
|
|
|
Mk22, 22A |
Fuselage: To Introduce Cockpit
Heating by the Installation of Warm Air Ducting
|
|
|
|
Mk22, 22A |
Radio: To Introduce Plessey
PTR 1751 ARI 23301/26 UHF in Lieu of PTR 170 ARI 18197/1 UHF
|
|
|
|
Mk22, 22A |
To Introduce Acrylic Paint
Finish to DTD 5599A on External Metal Surfaces
|
|
|
|
Mk22, 22A |
Flying Controls: To Introduce
Flap Control Cables Part Nos. SP 53-0570-16, SP 53-0520-23 and SP 530520-20
25 in Lieu of Part Nos. AS 1387-16, AS 1406-23 and AS1406-20
|
|
|
|
Mk22, 22A |
To Introduce and Make Provision
for Battery Type J Ref: 5J/65466954 in Lieu of Battery Type J Ref: 5J/3496080
and to Introduce Vent Adaptor Banjo
|
|
|
|
AAC ac WP983 & WZ884 only |
To Introduce and Make Provision
for a Mk. 14 Fatigue Meter and Air Speed Switch (6A/446 4239) and Air Speed
Switch (6A/11453)
|
|
|
|
|
To Introduce Cleveland Wheels
and Brakes in lieu of Dunlop Items. CANCELLED by the MOD
|
|
|
|
(except AAC) |
To Introduce an Extended Front
Cockpit Coaming (Concurrent with Mod. H.337). CANCELLED
|
|
|
|
|
To Introduce Chelton Broad
Band UHF Antenna Type 16-1 (Ref: 10B/2222-399) in Lieu of McMichael UHF
Aerial Type
|
|
|
|
Mk22, 22A |
To Introduce an Aerial Bonding
Post in the Starboard Wing (Complementary to H.332)
|
|
|
|
|
Undercarriage: To Introduce
Revised Dunlop Brake Units. Withdrawn by MOD
|
|
|
|
|
To Introduce Top Rear Canopy
Rail Part No. C1.FC.817 in Lieu of C1.CF.623 and Side Rails Part No. C1.FS.1905-6
in Lieu of C1.FS.621-2 (Future Spares Only)
|
|
|
|
|
Fuel System: To Introduce
Replacement Fuel Filler Cap Retaining Chain.
CANCELLED by MOD |
|
|
|
|
To Delete the Induction Manifold
Heater Pipes and Blank Off Exhaust Manifold.
Part A: RN ac Pre-Mod. H.336, Civil ac Pre-Mod. H.354.
Part B: AAC/RAF ac Post Mod. H.336, Civil ac Post-Mod. H.354 |
|
|
|
|
To Introduce Safety Catch
for the Fuel Cock Control Lever (Front Cockpit Only)
|
|
|
|
|
Undercarriage: To Introduce
Torque Plate AHM8280 (Dunlop Mod. M1540)
|
|
|
|
Mk22, 22A |
To Introduce Rudder Pedal
Assembly C1-CF 1537A and 1538A in Lieu and by Conversion of Assembly C1-CF
1373A
|
|
|
|
|
To Make Provision for Carriage
of 2 Spare Parachutes and Helmets
|
|
|
|
|
Fuselage: To Introduce Cockpit
Heating by the Installation of Warm Air Ducting
|
|
|
|
|
To Introduce New Control Cables
for the Cockpit Heating. Incorporated with Modification H.336
|
|
|
|
Mk22, 22A |
Fuselage: To Introduce "No
Step" Markings on the Cockpit Control Box Covers
|
|
|
|
|
To Introduce Tailplane Attachment
Fitting Part No. C1-TP 313 in Lieu of Fitting C1-TP 167
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Fuselage: To Introduce Reinforcing
Plates at the Upper Engine Mounting Attachment Points
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Mainplanes: To Introduce Inspection
Access Holes Adjacent to the Undercarriage Mounting
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To Introduce Reinforcing Strips
to Each of the Flanges of the Fin Rear Spar: Part A: Aircraft Pre-mod H.178.
Part B: Aircraft Post-mod H.178
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To Withdraw Aircraft Serial
Number Markings from Underside of Wings. CANCELLED by MOD
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Radio: To Introduce Plessey
PTR 1751 UHF in Lieu of PTR 170 UHF (ASR 889)
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Mk22, 22A |
Fuselage: To Introduce a Sealing
Gasket CIFS 1909 ND at the Brake Cylinder Access Panel. Access Panel Part
No. CIFS 1079 ND Becomes CIFS 1907A
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(RAF only) Mk22, 22A |
Instruments: To Introduce
Air Path Type C 2400-L4PS Compass in Lieu of Compass Type E2B on the Cockpit
Coaming
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(RAF only) Mk22, 22A |
Communications: To Make Provision
for and Introduce UHF Radio ARI 23301/56 (25KHz) in Lieu of and by Conversion
of UHF Radio ARI 23301/26 (50 Khz)
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Electrical: To Introduce Generator
Cable Part No. C1-N1027A in Lieu of Cable Part No. C1-N177A
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Communications: To Introduce
VHF Radio AD 120 in Lieu of UHF Radio PTR 170 and Standby Bendix VHF
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Electrical: To Introduce GatesVarley
Sealed Lead Acid Battery Part No. 9750-0741 in Lieu of Varley J Type Battery
Part No.V2092
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(G-BARS & G-BBRV) |
Communications: To Introduce
Becker Radio AR3201-(1) VHF Radio in Lieu of Type STR 9X Equipment
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(AAC only) |
Communications: To Introduce
UHF Radio ARI 23291/12 (25KHz) in Lieu of UHF Radio ARI 2391/2 (50KHz)
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(RAF & AAC) |
Electrical: To Introduce Conspicuity
Strobe Lights on the Wing Tips. Part A: Fixed Fittings in Mainplanes. Part
B: Fixed Fittings in Fuselage. Part C: Removable Equipment - Hella HISL,
Power Supply and Wiring
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(RN only) |
Communications: VHF Radio
- To Introduce Wiring Changes Necessary to Permit Dual Installation (AD
120/RT221)
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Electrical: Battery - Concord
batteries CB 12-9 (2 off) Fitted in Lieu of Batteries Type J (Mod H.309)
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Mk22, 22A |
Flying Controls: Flaps - To
Introduce a Revised Method of Assembly for the Flap Control Cable Swivel
Pulley Installation at the Wing Root
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Flying Controls: Flaps - To
Introduce a Revised Method of Assembly for the Flap Control Cable Swivel
Pulley Installation at the Wing Root
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Mk22, 22A |
Instrumentation: To Introduce
Fuel Contents Gauge PW1335FG in Lieu and by Conversion of Type LV1335FG.
Cover Mod for Smiths Mod SIB 1671
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Mk22, 22A |
To Introduce Rotax Electric
Starter in Lieu of Coffman Cartridge Starter
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Undercarriage: To Introduce
Undercarriage Piston Tube C1-U-179A in Lieu of Piston Tube C1-U-55
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Communications: Relocation
of Disable Switch for PTR1751BB Radio (SRIM 4223)
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Conversion of T Mk10 ac to
Mk 22/22A. CANCELLED
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Fuel Management: To Make Provision
for and Introduce 24 Gallon Fuselage Tank (Part No. C1-Z-1673A), Associated
Piping and Valves
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<<yet to be completed>>
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this page last updated on 12 March,
2009
© de Havilland Support Ltd.