DHC Technical Publications

* For CL technical publications, please visit: aerialfirefighter.vikingair.com/support/technical-publications

de Havilland Canada aircraft are recognized the world over for their reliability and longevity, and Viking is committed to keeping the fleet operational and in service for years to come. This commitment includes simplifying access to current versions of and revisions to Maintenance and Flight Manuals for DHC-2 Beaver through to DHC-7 Dash 7 aircraft. Viking has worked with Aircraft Technical Publishers (ATP) to provide up-to-date, digital versions of the technical libraries that are easily accessible and available by subscription.

Current Manual Status List, DHC-2 to DHC-7

View LIST

To obtain a subscription to a digital library, please contact ATP:

For more information on digital technical publications, please contact technical.publications@vikingair.com.

Service Bulletins

* For CL service bulletins, please visit: aerialfirefighter.vikingair.com/support/technical-publications

The table below contains the full list of service bulletins that have been issued in relation to DHC-2 Beaver, DHC-3 Otter, DHC-6 Twin Otter and DHC-7 Dash 7 aircraft. This list is for reference purposes only. To purchase a subscription to a digital library, please contact Aircraft Technical Publishers. To obtain a copy of a particular service bulletin or for more information, please contact our Technical Publications Administrator.

Displaying 41 - 60 of 1683

Bulletins RSS

Aircraftsort ascending S/B No. Title Original Issue Latest Issue
DHC-7 7-53-23

Fuselage - Additional Drainage Holes in Lower Fuselage
- Modifications 7/2270 and 7/2308
(A/C 1 thru 92 for Modification 7/2270, A/C 1 thru 99 for Modification 7/2308)

Sep 30, 1983
DHC-7 7-27-8

Flap Position Indicator Circuit -  To Introduce Trailing Flap Potentiometers and Removal of Wiring at Potentiometers and Power Control Unit
-  Modification 7/1450
(A/C 1 thru 4, 6 and 7, 9 and 10)

May 4, 1979 Aug 17, 1979 'A'
DHC-7 7-34-37

Navigation - Radio Altimeter (RAD ALT) -  Installation of Isolation Diode in Decision Height Annunciation Circuit
-  Modification 7/2579
(A/C with S.O.O. 7182)

Mar 10, 1989
DHC-7 7-25-1

Cabin Overhead Stowage Bins - Doorater
- Modification 7/1310
(A/C 4)

May 12, 1978
DHC-7 7-32-84

Landing Gear - Main Landing Gear Drag Struts - Introduction of Plugs in Uplock Rigging Holes
- Modification 7/2537
(A/C 3 and Sub.)

Feb 6, 1987
DHC-7 7-92-2

Insulating Diode with Metallic End Cap (Effectivity - See Sperry Technical Newsletter 29-9000-03)

Nov 28, 1980
DHC-7 7-23-15

Communications - Passenger Address System - Addition of P.A. Side Tone Flight Deck Headsets
- S.O.O. 7153
(A/C 3 and Sub. with S.O.O. 7026) (Forward Observer's Seat - Flight Compartment Installed)

Jan 24, 1983
DHC-7 7-32-4

Nose Landing Gear - To Add Protective Cover to Weight Switches
- Modification 7/1309
(A/C 1, 2 and 4)

Nov 22, 1978
DHC-7 7-61-6

Propellers - Removal and Replacement of Propeller Extension Dome Assemblies or Dome Extensions
-  Hamilton Standard Alert S/B A23
(Effectivity - See Hamilton Standard Alert S/B A23)

Mar 13, 1981
DHC-7 7-11-20

Labels - Addition of Cabin Interior
- Modification 7/2046
(A/C 4 thru 57)

Oct 2, 1981
DHC-7 7-28-12

Fuel System - Deletion of Refuel/Defuel Vent Line
- Modification 7/2186
(A/C 1 and Sub.)

Dec 10, 1982
DHC-7 7-54-5

Inboard Nacelles - To Provide Access Hole for Flap Screw Jack Rear Attachment
- Modification 7/1440 (A/C 1, 2, 3 and 6 thru 12)

Feb 23, 1979
DHC-7 7-27-24

Flying Controls Rudder System - To Reduce Sensitivity of Spring Strut Actuating Switch
- Modification 7/1507
(A/C 1 thru 27)

Sep 12, 1980
DHC-7 7-39-4

Instruments - Turn and Slip Indicator -  To Compensate for 90_ Instrument Panel Slope
-  Modification 7/1577
(A/C 1 thru 27 less 23)

May 9, 1980
DHC-7 7-25-17

Furnishings - Protection for Rear Emergency Exit Air Line
- Modification 7/1564
(A/C 1 thru 31, 33, 34, 36, 37 and 38)

Feb 20, 1981 Apr 3, 1981 'A'
DHC-7 A7-32-100

Landing Gear - Inspection of Main Landing Gear Upper Lockstrut (and rectification)
All Aircraft

Jul 7, 1993 Aug 30, 1993 'A'
DHC-7 7-24-6

Electrical System - AC Bus Fail Relay Protection
- Modification 7/1477 (A/C 1, 2, 3, 4, 7 and 9)

Nov 3, 1978 May 11, 1979 'A'
DHC-7 7-32-20

Nose Landing Gear - Replacement of Outer Drag Strut and Sub-Assembly
- Modification 7/1372 (A/C 1 thru 25)

May 9, 1980 Oct 2, 1981 'A'
DHC-7 7-71-3

Engine Cowling - To Rework Aft Panel
- Modification 7/1354
(A/C 1 thru 12)

Mar 30, 1979
DHC-7 7-21-1

Nose Avionics Bay - Additional Cooling Fan
- Modification 711378 (A/C 3, 4, 7 and 9)

Aug 31, 1978

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