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 - 32 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
|
|
|
|
|