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 1541 - 1560 of 1684

Bulletins RSS

Aircraftsort descending S/B No. Title Original Issue Latest Issue
DHC-7 7-24-35

Electrical System - Variable Frequency A.C. Power - Special Inspection of Cable Assembly (A/C 1 thru 68)

Oct 2, 1981
DHC-7 7-32-49

Nose Landing Gear - Downlock Inspection Light Mounting Bracket Rework
-  Modification 7/2235 (A/C 1 thru 102)

Oct 1, 1982
DHC-7 7-76-1

Engines Controls - Microswitch Mounting Improvement for Flight Idle Gate Operating Mechanism
- Modification 7/1527
(A/C 1 thru 22)

Dec 21, 1979 Feb 25, 1980 'A'
DHC-7 7-21-30

Air Conditioning - Insulation - Removal of Black Insulation
All aircraft

Jul 6, 1994
DHC-7 7-30-9

Engine Intake Deicing Boots - Bleed Air Supply Line - Improved Clamping
- Modification 7/1993 (A/C 1 thru 92)

Jan 8, 1982
DHC-7 7-57-12

Left and Right-Hand Wing Ground Spoiler Actuator Attachment Bracket - Inspection and Replacement of Rivets with Bolts
- Modification 7/1827
(A/C 1 thru 30)

Jan 15, 1982
DHC-7 7-27-69

Wings - Flight and Ground Spoiler Hinge Assembly Bushing Installation
- Modification 7/2260
(A/C 1 thru 112)

Mar 22, 1985 Apr 3, 1987 'A'
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 7-24-52

Electrical System - Wing Root Terminal Block Relocation
- Modification 7/2317 (A/C 3 thru 112)

Apr 6, 1984
DHC-7 7-32-66

Landing Gear - Tail Bumper Support Fitting
-  Steel Saddle Clip Installation
-  Modification 7/2386
-  Modification 7/2386 (A/C 1 thru 112) (A/C 1 thru 112)

Jun 29, 1984 Mar 29, 1985 'A'
DHC-7 7-77-5

Engine Indicating - Torque Pressure Transmitter Vibration Isolators Replacement
- Modification 7/2232
(A/C 1 thru 113)

Apr 19, 1984
DHC-7 7-22-17

Not issued

DHC-7 7-30-26

Ice and Rain Protection - Deicer Distributor Valve - Incorporation of High Temperature Components
- Modification 7/2551
(A/C 1 thru 108)

Dec 18, 1987
DHC-7 7-57-29

Wings - Installation of Stainless Steel Washers on Heat Shields
- Modification 7/2507
(A/C with Modification 7/2414)

Aug 1, 1986 Apr 15, 1988 'B'
DHC-7 7-11-2

External Fuel System Markings - Label Revision at Pressure Refueling Point
- Modification 7/1296 (A/C 1, 2 and 4)

DHC-7 A7-27-86

Flight Controls - Special Inspection and Rectification of Flap Indication Circuit in Flap Position Trim Control Box Assembly Serial Numbers 3 and subsequent with Modification 7/2093. Aircraft with Customer Special Installation 78358 (flap indication rework) are excluded

Dec 19, 1991
DHC-7 7-53-21

Fuselage Structure - To Provide Drain Trough Under Centre Floor Panel
- Modification 7/1914
(A/C 1 thru 72)

Feb 26, 1982

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