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 141 - 160 of 1698

Bulletins RSS

Aircraftsort ascending S/B No. Title Original Issue Latest Issue
DHC-7 7-21-29

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

 Feb 5, 1993
DHC-7 7-28-23

Fuel - Left and Right Hand Tanks - Special Inspection for Bonding Integrity and Condition of the Bonding Jumpers, Conduit, Probes and Related Components
- Modification 7/1397 (A/C 3 thru 113)

 Aug 20, 2002
DHC-7 7-52-22

Doors - Rear Emergency Exit - Inspection for Handle Operating Loads and Rectification (A/C 3 thru 73)

 Jan 28, 1983 May 20, 1983 'A'
DHC-7 7-61-19

Propellers - Change to Lower Rated Circuit Breaker in Synchrophase Control
- Modification 7/2567
(All A/C)

 Sep 2, 1988
DHC-7 V7-33-01

DHC-7 - Fluorescent Light System Overheating - Ballast Replacement

 Feb 28, 2008
DHC-7 7-54-18

Nacelles - Propeller Restraint - External Loops for Lanyard Hook
- Modification 7/2214
(A/C 1 and Sub.)

 Feb 23, 1990
DHC-7 7-27-48

Flight Controls - Trailing Flaps Magnetic Switch Wiring Rework
- Modification 7/1937
(A/C 1 thru 92)

 Dec 22, 1982
DHC-7 7-24-50

Electrical Power - DC External/Internal Power Transfer - Introduction of Time Delay Relays
- Modification 7/2184
(A/C 3 thru 90 and 94)

DHC-7 7-32-31

Main Landing Gear - Drag Strut Bearing Housing Installation - Special Inspection and Rectification
(A/C 1 thru 23)

 Oct 10, 1980
DHC-7 7-25-41

Life Raft - Cover Panels - Improved Retention
-  Modification 7/2194
(A/C 10, 20, 40 and 51 - these A/C incorporate S.O.O. 7045 -  Ditching Provisions and Survival Equipment)

 Feb 11, 1983
DHC-7 7-22-15

Not issued

DHC-7 7-29-11

Hydraulic System - Rudder Actuator -  Installation of Heavier Wall Pressure Tube Assembly on Vertical Stabilizer
-  Modification 7/2236
(A/C 21 thru 73 less 53, 58, 68 and 71)

 Apr 23, 1982
DHC-7 7-10-1

Ground Support Equipment - Improved
Engine Intake and Exhaust Covers
- Modification 7/2013
(A/C 1 thru 72)

 Feb 19, 1982
DHC-7 7-71-16

Power Plant - Improved Small Combustion Chamber Exit Duct Assembly - Pratt and Whitney S/B 6071
(All A/C with PT6A-50 Engines Prior to Serial Number PC-E86433)

 Jun 18, 1982
DHC-7 7-34-16

VHF Navigation System - VOR 1 and VOR 2 Circuit Breaker Replacement
- Modification 7/2055
(A/C 1 thru 65 with S.O.O. 7003)

 Mar 5, 1982 Jun 11, 1982 'A'
DHC-7 7-56-3

Windshield - Introduction of Third Heat Sensor and Additional Terminal Block Connections
- Modification 7/1769
(A/C 1 thru 32)

 Oct 24, 1980
DHC-7 7-27-64

Flight Controls - Rudder Restrictor Sprocket Mechanism Replacement
- Modification 7/2387
(A/C 1 thru 112)

 Sep 14, 1984 Oct 2, 1987 'B'
DHC-7 7-32-63

Nose Landing Gear - Steering Actuator Anti-Rotation - Revised Arrangement
- Modification 7/2338
(A/C Serial Numbers 1 thru 86, 89, 91, 94 and 95)

 Jan 20, 1984 Apr 3, 1987 'C'
DHC-7 7-32-47

Nose Landing Gear - Downlock Mechanism Improvement
- Modification 7/2243
(A/C 3 thru 112)

 Aug 20, 1982
DHC-7 7-25-57

NOT ISSUED

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