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 1621 - 1640 of 1684

Bulletins RSS

Aircraftsort descending S/B No. Title Original Issue Latest Issue
DHC-7 7-27-35

Flying Controls - Flap System Duplicate Drive - To Introduce Double Universal Joint at Angle Gearbox
- Modification 7/1744 (A/C 1 thru 52)

Oct 23, 1981
DHC-7 7-52-7

Cargo Door Actuator - Replacement of Actuator Housing
- Modification 7/1594
(A/C 7, 9 thru 12 and 15)

Sep 28, 1979 Mar 17, 1980 'B'
DHC-7 7-25-28

Rear Baggage Compartment -  Floor Bulkhead Gap Sealing
-  Modification 7/1506
(A/C 1 thru 10)

Oct 9, 1981
DHC-7 7-33-8

Avionics Advisory Lights - Wiring Revision for Aircraft Incorporating Radio
Altimeter Dual Installation
- Modification 7/1831
(A/C 22)

Feb 13, 1981
DHC-7 7-24-17

Proximity Switch Rework - To Prevent Ingress of Moisture
(A/C 1 and Sub. as required)

Sep 5, 1980
DHC-7 7-32-31

Main Landing Gear - Drag Strut Bearing Housing Installation - Special Inspection and Rectification
(A/C 1 thru 23)

Oct 10, 1980
DHC-7 7-71-14

Power Plant - Compressor Turbine Vane Ring -  Pratt and Whitney S/Bs 4069 and 4061
(Effectivity - See Pratt and Whitney S/Bs 4069 and 4061)

Feb 19, 1982
DHC-7 7-21-12

Cabin Pressurization Control and Drainage System - To Overcome Freezing in Severe Cold Conditions
- Modification 711 652
(A/C 1 thru 39)

Mar 20, 1981
DHC-7 7-29-11

Hydraulic System - Rudder Actuator -  Installation of Heavier Wall Pressure Tube Assembly on Vertical Stabilizer
-  Modification 7/2236
(A/C 21 thru 73 less 53, 58, 68 and 71)

Apr 23, 1982
DHC-7 7-56-1

Flight Compartment D.V. Window Mechanism - To Install Modification 7/1315
(A/C 1 thru 27 less 10 and 20)

Jun 9, 1978 Jan 28, 1980 'A'
DHC-7 7-27-51

Flight Controls - Flap Track No. 4 and 5 Support Structure - Introduction of Shims
- Modification 7/2182
(A/C 1 thru 67) (incorporated on A/C 68 thru 92 by Authority of DHC E.O. 74996)

Jun 3, 1983 Mar 9, 1984 'A'
DHC-7 7-52-22

Doors - Rear Emergency Exit - Inspection for Handle Operating Loads and Rectification (A/C 3 thru 73)

Jan 28, 1983 May 20, 1983 'A'
DHC-7 7-25-44

Furnishings - Lavatory Lower Waste Disposal Door Removal
- Modification 7/2391
(A/C 1 thru 89, 91, 94 and 95)

Apr 19, 1984 Jun 7, 1985 'A'
DHC-7 V7-33-01

DHC-7 - Fluorescent Light System Overheating - Ballast Replacement

Feb 28, 2008
DHC-7 7-24-33

Electrical System - To Introduce Lever Lock Switches for Master Control on A.C. Control Panel Assembly
- Modification 7/1896
(A/C 1 thru 52)

Sep 11, 1981
DHC-7 7-32-47

Nose Landing Gear - Downlock Mechanism Improvement
- Modification 7/2243
(A/C 3 thru 112)

Aug 20, 1982
DHC-7 7-73-6

Fuel System - Inspection and Replacement of Fuel Tank Flapper Valve
(A/C with Flapper Valve Coded
Either G1, S1, R2, E2, P2, U2, B2, L2, I2, C2, M2, F2, G2, S2, R3, E3, P3, U3, B3 or C3)

Jan 20, 1984
DHC-7 7-21-28

Air Conditioning - Standardized Outflow Valves Aft Cabin - Pressure System
- Modification 712406
(A/C 1 thru 108)

Apr 4, 1986
DHC-7 7-30-7

Windscreen Washer - To Improve Washer Coverage
- Modification 7/1789
(A/C 1 thru 35 with S.O.O. 7039)

Feb 20, 1981
DHC-7 7-57-10

Wing Structure - Flight and Ground Spoilers Hinge Arms and Shroud Seals
-  Change of Seal Material
-  Modification 7/1376 (A/C 3 thru 27)

Nov 20, 1981

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