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 161 - 180 of 1684

Bulletins RSS

Aircraft S/B No. Title Original Issuesort ascending Latest Issue
DHC-7 7-26-12

Fire Protection - Hand Held Fire Extinguishers - Change of Vendor
- Modification 7/2588 (A/C 3 and Sub.)

Dec 7, 1990
DHC-7 7-27-84

Flight Controls - Addition of Backing Strips to Mid Trailing Flap Seals
(A/C 1 and Sub.)

Oct 26, 1990
DHC-7 7-28-21

Fuel - Fuel Tank Drain Valve Replacement
- Modification 7/2594
(A/C 1 and Sub.)

Aug 17, 1990
DHC-7 7-23-25

Communications - Rectification of Interphone Chime to Flight Deck Audio System
- Modification 7/2595 (A/C 1 and Sub.)

Jul 13, 1990
DHC-7 7-24-67

Nacelle Longeron / D.C. External Power Ground Stud - Rework to Minimize Corrosion
-  Modification 7/2599
(DHC-7 A/C with Modification 7/2577)

Jun 29, 1990
DHC-7 7-34-38

Navigation - Ground Proximity Warning System (GPWS) - Activation of Steep Approach Adapter at 45 Degrees Flaps Only
- Modification 7/2569
(A/C 1 and Sub. with S.O.O. 7181)

Jun 15, 1990
DHC-7 7-25-61

Equipment/Furnishings - Overhead Bins -  Replacement of Doorater Assembly with a Gas Spring
-  Modification 7/2224
(A/C 3 and sub. with S.O.O. 7042)

Apr 25, 1990
DHC-6 6/511

Flight Controls - Special Inspection for Distortion of Elevator Quadrant and Cracks in Quadrant Mounting Bracket Assembly Lugs
(All A/C)

Apr 20, 1990 Jun 22, 1990 'A'
DHC-7 7-53-34

Fuselage - Special Inspection and Rectification for Cleat and Fittings (Cargo A/C Only)
(A/C 7, 9 thru 12, 20, 21, 23, 31, 63, 72, 75, 81, 86, 94, 100 and 104 thru 106)

Apr 6, 1990
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-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 6/509

Nacelles - Longeron - Special Inspection
(All A/C)

Feb 23, 1990
DHC-6 6/510

Fire Protection - Introduction of New Portable Fire Extinguisher Type
Mod. 6/1889
(A/C with Mod. 6/1542 and E.O. 63513 Incorporated)

Feb 23, 1990
DHC-7 7-53-31

Fuselage - Introduction of New Nose Landing Gear Outer Drag Strut Attachment Fitting
- Modification 7/1328
(A/C 3 thru 27)

Dec 15, 1989
DHC-6 6/507

Wings - Aileron Assembly - Special Inspection and Rectification of the Aileron Mass Balance Weight Retention Channels for Corrosion
(A/C having 5 Years or more of Service)

Dec 15, 1989 Jan 26, 1990 'C'
DHC-6 6/508

Parking and Mooring - Gust Lock Assembly
Mods. 6/1676 and 6/1726 (This S.B.Supersedes S.B. Nos. 6/383 and 6/391)
(A/C 1 thru 696 Less 691 and 694)

Dec 15, 1989 Jan 31, 1990 'C'
DHC-7 7-22-14

Auto Flight - Addition of Manual Deselect Input to Automatic Pilot Disconnect Audible Alert Unit
- Modification 7/2591
(All A/C with S.O.O. 7186)

Dec 1, 1989
DHC-7 7-54-11

Nacelles - Replacement of Landing Gear/ Rear Spar Diagonal Frame Members 75420012 with Members 75421508
-  Sub-Parts of Assembly 7Z5400
-  Modification Kit 7MK1500-001 (Part of Modification 7/1500) (A/C 3 thru 27)

Sep 29, 1989 Nov 3, 1989 'A'
DHC-7 7-27-80

Flight Controls - Replacement or Rework of Roll Spoiler Unloading Valves
- Modification 7/2486
(A/C 3 and Sub.)

Aug 25, 1989
DHC-6 6/505

Autoflight - Introduction of Collins APS-65 Automatic Flight Control System
S.O.O. 6188
(A/C 231 and Sub.)

Jul 28, 1989 Mar 2, 1990 'A'

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