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 Aircraft

Manual Status List – DHC-2 to DHC-7

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

For more information on digital technical publications, please contact csps-tp@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 CSPS Technical Publications Coordinator at csps-tp@vikingair.com.

Displaying 41 - 60 of 1697

Bulletins RSS

Aircraftsort ascending S/B No. Title Original Issue Latest Issue
DHC-7 7-61-6

Propellers - Removal and Replacement of Propeller Extension Dome Assemblies or Dome Extensions
-  Hamilton Standard Alert S/B A23
(Effectivity - See Hamilton Standard Alert S/B A23)

Mar 13, 1981
DHC-7 7-34-36

Navigation - Conversion of Radio Altimeter Receiver - Transmitter
- Modification 7/2544
(A/C 3 thru 108)

May 22, 1987
DHC-7 7-28-9

Fuel System - Solenoid Valve Replacement
- Modification 7/1752
(A/C 1 thru 72)

May 8, 1981 Jul 9, 1981 'A'
DHC-7 7-27-35

Flying Controls - Flap System Duplicate Drive - To Introduce Double Universal Joint at Angle Gearbox
- Modification 7/1744 (A/C 1 thru 52)

Oct 23, 1981
DHC-7 7-54-5

Inboard Nacelles - To Provide Access Hole for Flap Screw Jack Rear Attachment
- Modification 7/1440 (A/C 1, 2, 3 and 6 thru 12)

Feb 23, 1979
DHC-7 7-32-83

Landing Gear - Replacement of Hydraulic Selector Valve
- Modification 7/2516 (Supersedes Modification 7/2491)
(A/C 3 thru 110)

Nov 21, 1986 Mar 2, 1990 'B'
DHC-7 7-25-28

Rear Baggage Compartment -  Floor Bulkhead Gap Sealing
-  Modification 7/1506
(A/C 1 thru 10)

Oct 9, 1981
DHC-7 7-24-13

A.C. System 400 Hz - Paralleling Control Box - To Replace Modification 7/1689 (A/C 1 thru 14)

Oct 26, 1979 Oct 17, 1986 'B'
DHC-7 7-21-8

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

Mar 28, 1980
DHC-7 7-32-17

Main Landing Gear - Down Lock Release Actuator Hose - Inspection and Rectification
- E.O. 74524
(A/C 1 thru 18)

Dec 21, 1979
DHC-7 7-71-3

Engine Cowling - To Rework Aft Panel
- Modification 7/1354
(A/C 1 thru 12)

Mar 30, 1979
DHC-7 7-39-3

Instruments - Pilot's Chart Holder
- Modification 7/1580
(A/C 1 thru 27)

Jan 11, 1980 May 23, 1980 'A'
DHC-7 V7-28-02

Fuel - Refuel/Defuel - Wiring Change at Refuel/Defuel Panel for Pressure Relief Valve (PRV) - SFAR 88 Compliance

Oct 1, 2007 Sep 18, 2009 'A'
DHC-7 7-27-51

Flight Controls - Flap Track No. 4 and 5 Support Structure - Introduction of Shims
- Modification 7/2182
(A/C 1 thru 67) (incorporated on A/C 68 thru 92 by Authority of DHC E.O. 74996)

Jun 3, 1983 Mar 9, 1984 'A'
DHC-7 V7-54-02

Cracks in Engine Outboard Nacelles Upper Longerons

Dec 14, 2012
DHC-7 7-32-99

NOT ISSUED

DHC-7 7-25-44

Furnishings - Lavatory Lower Waste Disposal Door Removal
- Modification 7/2391
(A/C 1 thru 89, 91, 94 and 95)

Apr 19, 1984 Jun 7, 1985 'A'
DHC-7 7-24-29

Electrics - Wirelocking of Thermal Switches for Cooling Fans
- Modification 7/1873 (A/C 1 thru 25)

Feb 13, 1981
DHC-7 7-21-24

Air Conditioning - Bleed Air Temperature Control Sense tine Drain Holes
- Modification 712320
(A/C 3 thru 112)

Apr 6, 1984
DHC-7 7-32-33

Main Landing Gear - Up and Down Lock Switch Mounting Revisions
- Modification 7/1510
(A/C 3 thru 19)

Nov 21, 1980

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