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 1 - 20 of 1698

Bulletins RSS

Aircraft S/B No. Title Original Issue Latest Issuesort descending
DHC-7 7-27-87

Flight Controls - Flap Indication System Changes
- Modification 7/2604
Serial Numbers 003 thru 113 except 33, 50, 77, 109 and 110 with Customer Special Installation 78358

Jun 12, 1992
DHC-7 7-27-43

Flight Controls - Improved Second Stage Flap Dump Selector Valve
- Modification 7/2002
(A/C 1 thru 51)

Mar 12, 1982
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-6 6/182

Relocation of Fuel Heaters
Mod. 6/1192
(A/C 1 thru 170)

Mar 6, 1969
DHC-6 6/363

Introduction of 334C-9A Type Autopilot Servo
Mod. 6/1638
(A/C 231 thru 530)

Oct 7, 1977
DHC-6 V6/0013

Instructions For Re-labeling DHC-6 Control Column Using Authorized Data Plate
(S/N 845 and 846)

Apr 6, 2011
DHC-2 TB/41

Overhaul Life - Engine Driven Fuel Pumps

Jul 30, 1971
DHC-7 7-25-36

Furnishings - Emergency Locator Transmitter - Provision of Dual Frequencies
- Modification 7/1875
(A/C 1 thru 27 with Emergency Locator Transmitter)

Jan 15, 1982
DHC-7 7-39-2

Turn and Slip Indicator - To Delete `4 Min. Turn' from Face of Indicator
- Modification 7/1526
(A/C 1 thru 12)

Dec 7, 1979
DHC-6 6/102

Cabin R.H. Door - Safety Guard Installation -
Addition of Label
Mod. 6/1069
(A/C 1 thru 88)

Feb 21, 1968
DHC-6 6/283

Flap Position Indicator
Mod. 6/1404
(A/C 1 thru 290)

Jul 23, 1971
DHC-7 A7-32-98

Landing Gear - Extension and Retraction - Special Inspection of Downlock Microswitch Actuating Lever on Nose Landing Gear
Serial Numbers 3 thru 113

Jan 29, 1993
DHC-6 6/27

Hydraulic Power Package - Installation of Relief Valve in Brake Accumulator
Mod. 6/1042
(A/C 1 thru 65)

Jun 1, 1967
DHC-7 7-32-3

Nosewheel Steering Actuator - Replacement
- Modification 7/1396
(A/C 1 thru 4 and 7)

Jul 10, 1978
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 7-28-11

Fuel - Low Pressure Warning Switch Wiring Relocation
- Modification 7/1144
(A/C 3 thru 12)

Jul 9, 1982
DHC-7 7-27-59

Flying Controls - Fore Flap Hinge Arms -  Introduction of Steel Bushings
-  Modification 7/2288
(A/C 3 thru 99)

Mar 23, 1984
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-2 V2/0010

Inspection - Front Fuselage Struts and Airframe Lugs

Apr 3, 2020
DHC-6 6/198

Electrical Power Supply - Blocking Diode
Mod. 6/1293
(A/C 1 thru 254)

Oct 22, 1969

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