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 141 - 160 of 1683

Bulletins RSS

Aircraftsort ascending S/B No. Title Original Issue Latest Issue
DHC-7 7-27-39

Flight Controls - Trailing Flap Actuators -  Improved Retention of Actuator Lock Plunger
-  Modification 7/2067
(A/C 3 thru 66)

Jan 29, 1982 Aug 27, 1982 'A'
DHC-7 7-52-11

Airstair Door - To Increase Clearance at Door Stop Spindles
- Modification 7/1554
(A/C 1 thru 4, 6, 7, 9 and 10)

Oct 5, 1979
DHC-7 7-25-32

Window Reveal Lighting - Addition of Aluminum Foil Tape to Panels
- Modification 7/2080
(A/C 4, 5, 6, 8, 13, 14, 16 thru 19, 21, 25 thru 30, 33, 36 thru 40, 42, 43, 44, 47, 48,49, 51, 52, 53, 56 thru 59)

Dec 4, 1981
DHC-7 7-33-12

Lights - Lower Anti-Collision Light Ground Wire Retermination
- Modification 7/1992
(A/C 1 thru 92)

Feb 25, 1983
DHC-7 7-24-21

Avionics - V.H.F. Navigation System -  To Change Power Source for Excitation to Radio Magnetic Indicators
-  Modification 7/1678 (A/C 1 thru 19)

May 30, 1980
DHC-7 7-32-35

Wheel Bearing Tightening - Revised Instructions
- B.F. Goodrich S/B 392
(A/C 1 and Sub.)

Jul 9, 1982
DHC-7 7-71-18

Power Plant - Engine Fuel Flow Drain Relocation
- Modification 7/2175
(A/C 3 thru 86, 89, 91, 94 and 95 with Modification 7/1356)

Jan 21, 1983 Oct 12, 1984 'B'
DHC-7 7-21-16

Air Conditioning - Bleed Air Temperature Control Valve - Improved Mounting Installation
- Modification 7/1720 (A/C 1 thru 22)

Dec 4, 1981
DHC-7 7-29-15

Hydraulic Power - Engine Driven Pump -  Configuration Change
-  Modification 7/2246
(A/C 3 thru 99)

Apr 29, 1983
DHC-7 7-56-5

Windows - Flight Compartment Direct Vision Window - Improved Seal
- Modification 7/1962
(A/C 1 thru 102 less Serial Numbers 27, 49, 54, 62, 63 and 72)

Jun 4, 1982
DHC-7 7-27-55

Flight Control System - Flap Duplicate Drive Torque Tubes - Improved Steady Bearings
- Modification 7/2321
(A/C 3 thru 102)

Oct 14, 1983 Sep 14, 1984 'A'
DHC-7 7-52-26

Airstair Door - Forward Handrail - Addition of Rubbing Strip
- Modification 7/2089
(A/C 3 thru 35) (A/C 36 thru 92 will be Modified to DHC E.O. 74867)

Nov 6, 1981
DHC-7 7-25-48

Furnishings - Flight Attendant's Seat Restraint Harness Increased Length
- Modification 7/2267
(A/C 3 thru 107)

May 3, 1985
DHC-7 7-34-4

Ground Proximity Warning System
-  Addition of Flap Override Switch
-  Modification 7/1435
(A/C 4, 5, 6 and 10 with G.P.W.S. S.O.O. 7013)

Oct 5, 1979
DHC-7 7-24-37

Electrical System - Rework of Electrical Connectors 2824 P11 and P12 for Number One and Two Fuel Tank Dump Valve Air Solenoid Valves
- D.H. E.O. 77007
(A/C 54)

Nov 13, 1981
DHC-7 7-32-51

Main Landing Gear - Special Inspection of Retraction Actuator Rod End Securing Bolt
(A/C 3 and Sub.)

Mar 25, 1983
DHC-7 7-76-3

PT6A Engine - Replacement of Control Cables Incorporating Insulation of Sleeves
- Modification 7/1508
(A/C 1 thru 27)

May 9, 1980
DHC-7 7-22-2

Auto Flight - Temporary Rework to Wiring at Autopilot Computer
- Modification 7/1948 and 7/1944
(A/C 1 thru 30)

Sep 11, 1981 Nov 13, 1981 'A'
DHC-7 7-30-11

De-Icing System Distributor Valves - Bendix Corporation Service Bulletin 127
(A/C 1 and Sub. with Serial Numbers 1U thru 573U and all valves in Spares Holdings)

May 14, 1982
DHC-7 7-57-14

Wing Inboard Leading Edge - Inboard Nacelle Joint Rework
- Modification 7/1632
(A/C 3 thru 37)

Jun 25, 1982

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