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 21 - 40 of 1684

Bulletins RSS

Aircraft S/B No. Title Original Issue Latest Issuesort descending
DHC-2 TB/39

PT6-6 & -20 Engine Compressor Inlet Screens-Icing Restrictions

Jul 15, 1971
DHC-7 7-24-33

Electrical System - To Introduce Lever Lock Switches for Master Control on A.C. Control Panel Assembly
- Modification 7/1896
(A/C 1 thru 52)

Sep 11, 1981
DHC-6 6/184

Wheel - Skis Main - Installation of Torsion Spring Trim
Mod. 6/1236
(All A/C)

Sep 18, 1969
DHC-7 7-32-47

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

Aug 20, 1982
DHC-6 6/520

Air Conditioning - Cockpit Cooling - Fan Replacement
- Mod 6/1897
(All A/C)

Jun 18, 1997
DHC-7 7-73-6

Fuel System - Inspection and Replacement of Fuel Tank Flapper Valve
(A/C with Flapper Valve Coded
Either G1, S1, R2, E2, P2, U2, B2, L2, I2, C2, M2, F2, G2, S2, R3, E3, P3, U3, B3 or C3)

Jan 20, 1984
DHC-7 7-21-28

Air Conditioning - Standardized Outflow Valves Aft Cabin - Pressure System
- Modification 712406
(A/C 1 thru 108)

Apr 4, 1986
DHC-6 6/104

Cabin Ventilation - Re-designed Air Intake Scoop - Introduction
Mod. 6/1105
(A/C 1 thru 135)

Feb 21, 1968
DHC-7 7-30-7

Windscreen Washer - To Improve Washer Coverage
- Modification 7/1789
(A/C 1 thru 35 with S.O.O. 7039)

Feb 20, 1981
DHC-6 6/440

Main Landing Gear - Installation of Longer Compression Block Alignment Spigots
Mod. 6/1806
(A/C 1 thru 820)

Oct 1, 1982
DHC-7 7-57-10

Wing Structure - Flight and Ground Spoilers Hinge Arms and Shroud Seals
-  Change of Seal Material
-  Modification 7/1376 (A/C 3 thru 27)

Nov 20, 1981
DHC-6 6/24

Fuselage Front Wing Spar Attachment Beam - Front Spar Reinforcement
Mod. 6/1020
(A/C 6 thru 19)

May 30, 1967
DHC-7 7-27-67

Flight Controls - Replacement Flight Spoiler Servo Actuator
- Modification 7/2285
(A/C 1 thru 112)

Nov 16, 1984
DHC-6 6/360

Fuel System - Interference Between Fuel Line and Invermotor Pump Wiring Terminal
Mod. 6/1626
(A/C 1 thru 540)

May 3, 1977
DHC-7 7-53-1

Front Fuselage - Provision for Static Port Tester
- Modification 7/1254
(A/C 1, 2 and 4)

Apr 14, 1978
DHC-3 3/03

Amendment to de Havilland Engineering Bulletin Series 'O' 11

Jul 20, 1967
DHC-7 7-25-60

Equipment/Furnishings - Wash Water System - Introduction of Additional Drain Valve
- Modification 7/2552
(A/C 1 thru 52 without Modification 7/1395)

Feb 23, 1990
DHC-6 6/280

Air Conditioning Compartment - To Improve Sealing
(A/C 1 thru 330)

Jul 30, 1971
DHC-2T A2/53

Not Applicable

DHC-2 TB/55

Propeller - Feedback Mechanism Carbon Block Assembly Replacement - Modification Bulletin T2/2078

Feb 3, 1984

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