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 for DHC & CL Aircrafts

Manual Status List – DHC-2 to DHC-7

Manual Status List - CL-215/215T/415/415MP

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

For more information on digital technical publications, please contact technical.support@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 1691

Bulletins RSS

Aircraft S/B No. Title Original Issue Latest Issue
DHC-7 7-22-9

Auto Flight - Autopilot Annunciator and System Coupling Switch Installation
- Modification 7/2070
(A/C 3 thru 86 and 89, 91, 94 and 95)

Oct 21, 1983 Feb 28, 1986 'B'
DHC-7 7-22-8

Auto Flight - Autopilot Controller -  Deletion of Turn Control Knob
-  Modification 7/2334
(A/C 3 thru 86, 88, 89, 91, 94 and 95)

Aug 19, 1983 Jun 21, 1996 'B'
DHC-7 7-22-7

Auto Flight - Autopilot Systems -  Aileron Servo Improvement
-  Modification 7/2328
(A/C 1 thru 83, 85, 86, 89, 94 and 95)

Mar 25, 1983 Nov 25, 1983 'B'
DHC-7 7-22-6

Autopilot Systems
(A/C 3 and Sub.)

Nov 1, 1982 Dec 13, 1983 'B'
DHC-7 7-22-5

Autopilot System - Aileron Servo Motor Installation - Special Inspection
- Modification 7/2315
(A/C 3 thru 83, 85, 86 and 89 with S.O.O. 7017)

Oct 29, 1982 May 20, 1983 'B'
DHC-7 7-22-4

Auto Flight - Rework to AFCS Relay Box
- Modification 7/1920
(A/C 28 thru 34)

Jan 15, 1982
DHC-7 7-22-3

Auto Flight - Control System -  Installation of Two Additional Relays
-  Modification7/2144 (A/C 3 thru 61)

Jan 15, 1982 Apr 12, 1982 'A'
DHC-7 7-22-20

Automatic Flight Control System - Inspection/Replacement of Elevator and Aileron Servo Drive Part Numbers.
(A/C 3 thru 113)

May 29, 2006
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'

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