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 121 - 140 of 1684

Bulletins RSS

Aircraftsort ascending S/B No. Title Original Issue Latest Issue
DHC-7 7-56-2

Windscreen Installation - To Replace Flush Head Screws with Hex Head Screws
- Modification 7/1207 (A/C 4)

Aug 14, 1978
DHC-7 7-27-52

Flight Controls - Replacement of Trailing Flap Potentiometer with Fixed Resistors
- Modification 7/2093
(A/C 3 thru 89 and 91)

Apr 15, 1983 Mar 20, 1987 'B'
DHC-7 7-52-23

Airstair Door - To Improve Seal Deflation System
- Modification 7/1868 (A/C 1 thru 45 less 36)

Jun 15, 1981
DHC-7 7-25-45

Furnishings - Relocation of Crew Seat Inertia Reel Lockout Levers
- Modification 7/2388
(A/C 1 thru 97)

May 4, 1984
DHC-7 7-34-1

Flight Data Recorder - Addition and Revision to Circuitry
- Modification 7/1261
(A/C 1, 2 and 4)

Apr 20, 1979 May 28, 1979 'A'
DHC-7 7-24-34

D.C. Generator Control Unit - Additional Ground Installation
- Modification 7/2000
(A/C 3 thru 65 with units U13866/2 or U13866/3)

Sep 11, 1981 Jun 18, 1982 'A'
DHC-7 7-32-48

Main Landing Gear - Undercarriage Emergency Release Bracket
- Modification 7/1832
(A/C 1 thru 72)

Oct 1, 1982 Jul 31, 1987 'B'
DHC-7 7-73-7

Engine Fuel and Control - Modification of Water Separator and Filter
- Bendix Corp. S/B 135a
(A/C 1 and Sub. and all PT6-50 Engines in Spares Holdings)

Mar 9, 1984
DHC-7 7-21-29

Air Conditioning - Pressurization Control - Installation of Redesigned Controller
- Modification 712602
All aircraft

Feb 5, 1993
DHC-7 7-30-8

Deicing System - Replacement of Deicing Tubes in Right Hand Wing
- Modification 7/1897 (A/C 1 thru 52)

Sep 4, 1981
DHC-7 7-57-11

Wing Forward Pick-Up Adapter Plates
-  Special Inspection and Rectification
-  Modification 7/2319
(A/C 1 thru 86 less Serial Numbers 78 and 84)
(A/C Serial Numbers 78, 84 and 87 and Sub. will have DH E.O. 72292 or this Modification Incorporated Prior to Delivery)

Dec 17, 1982
DHC-7 7-27-68

Flight Controls - Trailing Flap Selector Solenoid Valve Suppression Diode
- Modification 7/2401
(A/C 3 thru 112 with Modification 7/2093)

Jan 18, 1985
DHC-7 7-53-3

Rear Fuselage - To Improve Stringer Attachments to Frames at Stations X596.75 and X714.50
- Modification 7/1271
(A/C 4, 8 and 9)

Jul 13, 1979
DHC-7 7-26-1

Fire Protection System - Inspection of Fire Bottle Cartridge Connector
(A/C 1 thru 22)

Apr 11, 1980
DHC-7 7-34-18

Aircraft Overspeed Warning System -  Alternate Overspeed Warning Switch and Mounting Rework
-  Modification 7/1997
(A/C 1 thru 62)

Aug 13, 1982
DHC-7 7-24-51

Electrical Power - Aircraft Main Batteries Replacement
- Modification 7/2171
(A/C 3 thru 112 with Modification 7/1263 Electrical System - Installation of Batteries in Forward Avionics Bay)

Aug 19, 1983 Mar 22, 1985
DHC-7 7-32-65

Landing Gear - Normal Brake System Hydraulic Tube Assembly - Inspection and Forward Wing/Fuse Access Panel Rework
- Modification 7/2327
(A/C 3 thru 83, 85, 86, 89 and 94)

Apr 6, 1984
DHC-7 7-77-4

Engine/Propeller Indicating - Improved Tachometer Generator Assembly
- Modification 7/2152
(A/C 1 thru 92 & all Spare Engines)

Apr 30, 1982
DHC-7 7-22-16

Not issued

DHC-7 7-30-25

Ice and Rain Protection - Snow Separator Actuator - Change of Stroke Limit
- Modification 7/2540
(A/C with ITT Actuator LA11A2113-1 or -2

Jul 31, 1987

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