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 1581 - 1600 of 1683

Bulletins RSS

Aircraft S/B No. Title Original Issue Latest Issue
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 7-22-19

Not issued

DHC-7 7-22-18

Not issued

DHC-7 7-22-17

Not issued

DHC-7 7-22-16

Not issued

DHC-7 7-22-15

Not issued

DHC-7 7-22-14

Auto Flight - Addition of Manual Deselect Input to Automatic Pilot Disconnect Audible Alert Unit
- Modification 7/2591
(All A/C with S.O.O. 7186)

Dec 1, 1989
DHC-7 7-22-13

Auto Flight - Auto Pilot Disconnect Audible Alerter - Change of Power Source - Modification 8/2578
(A/C with S.O.O. 7186)

Jan 20, 1989
DHC-7 7-22-12

Auto Flight - Introduction of Auto Pilot Disconnect Audible Alert Unit
- S.O.O. 7186
(A/C 3 and Sub. without Modification 7/2545)

Mar 4, 1988
DHC-7 7-22-11

Auto Flight - Auto Pilot Controller Incorporation of Time Delay
- Modification 7/2390
(A/C 3 thru 97 and 101 thru 104)

Jan 18, 1985 Jun 28, 1985 'A'
DHC-7 7-22-10

Auto Flight System - Aileron Servo bracket Attachment Screws - Special Inspection and Rectification - Sperry Technical News Letter 23-1983-06, Rev. 1

Mar 9, 1984 Mar 30, 1984 'A'
DHC-7 7-22-1

Autopilot Computer - Roll Channel Improvement
- Modification 7/1458 (A/C 1 - 4, 6, 7, 9 and 10)

Mar 23, 1979 Apr 30, 1979 'A'
DHC-7 7-21-9

Bleed Air System - To Install Diverter Valve
- S.O.O. 7066
(A/C 1 and Sub. as required)

May 30, 1980 Oct 2, 1981 'A'
DHC-7 7-21-8

Air Conditioning - Toilet Compartment
- E.O. 70927
(A/C 1 thru 27)

Mar 28, 1980
DHC-7 7-21-7

Air Conditioning - Flow Control Elimination
- S.O.O. 7069
(A/C 1 and Sub. as required)

Jan 5, 1980
DHC-7 7-21-6

-  Addition of Emergency Ventilation Air Intake
- Modification 7/1493
(A/C 1 thru 17)

Nov 23, 1979 Aug 12, 1983
DHC-7 7-21-5

Air Conditioning - Cabin Improvement
- Modification 711444
(A/C 1 thru 7 and 9)

Jul 6, 1979
DHC-7 7-21-4

Air Conditioning - Foot Warmer - To Improve Heat Supply to Flight Crew
- Modification 711528
(A/C 1 thru 12)

Jul 6, 1979
DHC-7 7-21-30

Air Conditioning - Insulation - Removal of Black Insulation
All aircraft

Jul 6, 1994
DHC-7 7-21-3

Direct Vision Window - To Introduce Seal at Air Conditioning Duct Outlet
- Modification 711230
(A/C 1, 2 and 4)

Mar 23, 1979

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