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 & CL Aircrafts

Manual Status List – DHC-2 to DHC-7

Manual Status List - CL-215/215T/415/415MP

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

For more information on digital technical publications, please contact dh_technical.support@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 1 - 20 of 1692

Bulletins RSS

Aircraft S/B No. Title Original Issue Latest Issuesort descending
DHC-6 6/08

Voltage Regulator - lntroduction of Improved
Mod. 6/1017
(A/C 1 thru 20 and 22)

Mar 10, 1967
DHC-7 7-32-79

NOT ISSUED

DHC-7 7-27-61

Flight Controls - Elevator Spring Tab Limit Stop Replacement
- Modification 7/2350 (A/C 3 thru 102)

Jun 8, 1984
DHC-7 7-57-31

Wings - Internal Skin Panel Corrosion - Special Inspection
(A/C Serial Number 3 thru 101)

Nov 4, 1987
DHC-7 7-29-14

Hydraulic System - Outboard Nacelles -  Tube Assembly Replacement and Additional Clamp Installation
-  Modification 7/1835 (Serial Number 3 thru 22)
-  Modification 7/1845 (Serial Number 3 thru 30)

Sep 17, 1982
DHC-7 7-24-21

Avionics - V.H.F. Navigation System -  To Change Power Source for Excitation to Radio Magnetic Indicators
-  Modification 7/1678 (A/C 1 thru 19)

May 30, 1980
DHC-7 7-25-54

NOT ISSUED

DHC-2 2/35

Not applicable

DHC-6 6/494

Wing Strut Assemblies - Continuing Integrity
(All A/C)

Oct 23, 1987
DHC-7 7-53-23

Fuselage - Additional Drainage Holes in Lower Fuselage
- Modifications 7/2270 and 7/2308
(A/C 1 thru 92 for Modification 7/2270, A/C 1 thru 99 for Modification 7/2308)

Sep 30, 1983
DHC-7 7-21-16

Air Conditioning - Bleed Air Temperature Control Valve - Improved Mounting Installation
- Modification 7/1720 (A/C 1 thru 22)

Dec 4, 1981
DHC-6 6/101

Airstair Door - Safety Guard Installation - Label Change
Mod. 6/1068
(A/C 1 thru 60)

Feb 21, 1968
DHC-2 TB/15

Sealing Strip CT2U1004-37 (CVR-12) Lower Collar - Wing Strut - Protective Coating & Improved Adhesive

Feb 8, 1968
DHC-6 6/414

Air Conditioning System - Performance Improvement Modifications
(All A/C Equipped with S.O.O. 6109)

Dec 15, 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 7-32-95

Landing Gear - Nose Landing Gear Steering
-  Reduction of Actuator Creep
-  Modification 7/2608
Serial Numbers 3 thru 113

Jul 31, 1992
DHC-6 6/337

Air Conditioning Power Supply Cable-Special Inspection
(A/C 1 thru 459)

Oct 10, 1975
DHC-7 7-32-50

Nose Landing Gear - Steering Actuator Assembly - Shimmy Damping and Corrosion Prevention Rework
-  Modifications 7/2095 and 7/2195
(A/C 1 thru 68 - Modification 7/2095)
(A/C 1 thru 107 - Modification 7/2195)

Oct 1, 1982
DHC-3 3/03

Amendment to de Havilland Engineering Bulletin Series 'O' 11

Jul 20, 1967
DHC-6 6/257

NOT ISSUED

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