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 1697

Bulletins RSS

Aircraft S/B No. Title Original Issue Latest Issuesort ascending
DHC-7 7-54-13

Inboard Nacelles - Front Spar Frame Replacement
(A/C 3 thru 27)

Aug 12, 1983 Apr 15, 1988 'B'
DHC-7 7-30-18

Ice and Rain Protection - Centre Fuselage Ice Guard Installation - S.O.O. 7161
(A/C 1 and Sub)

Dec 21, 1984 Dec 11, 1987 'C'
DHC-7 7-34-34

Navigation - Ground Proximity Warning Computer (G.P.W.C.) - Reconfiguration of Altitude Rate Circuitry
(A/C with GPWC Part Number 965-0476-088, Prior to Serial Number 5568)

Sep 19, 1986 Nov 20, 1987 'B'
DHC-7 7-34-35

Navigation - Ground Proximity Warning System - Installation of Steep Approach Adapter
- S.O.O. No. 7181
(A/C 1 and Sub.)

Mar 6, 1987 Oct 30, 1987 'B'
DHC-6 6/489

Wings - Introduction of Flap Hinge Arm Inspection Panels at Wing Station 310.00
Mod. 6/1871
(All A/C)

Oct 17, 1986 Oct 23, 1987 'A'
DHC-6 6/493

Electrical Power - Special Inspection and Rectification of Circuit Breakers
(A/C 831; all other A/C may have Suspect Circuit Breakers Installed During In-Service Maintenance or Modification)

Jan 16, 1987 Oct 23, 1987 'C'
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-3 3/42

Equipment/Furnishings - Utility Seats Special Inspection and Forward Leg Positive Lock Installation - Modification 3/932

Aug 31, 1984 Sep 18, 1987 'A'
DHC-7 7-11-35

Placard and Markings - Additional External Markings at break-In Points
- S.O.O. 7103
(A/C 3 and Sub.)

Sep 15, 1985 Jul 31, 1987 'A'
DHC-7 7-27-77

Flight Controls - Rudder Trim Control -  Audible Warning
-  Modification 7/2500
(A/C 1 thru 112)

Jun 27, 1986 Jul 31, 1987 'B'
DHC-7 7-25-49

Equipment/Furnishings - Rear Baggage Compartment - Installation of Ceiling Firescreen
- Modification 7/2499
(A/C 1 and Sub.)

Apr 18, 1986 Jul 31, 1987 'B'
DHC-7 7-32-48

Main Landing Gear - Undercarriage Emergency Release Bracket
- Modification 7/1832
(A/C 1 thru 72)

Oct 1, 1982 Jul 31, 1987 'B'
DHC-7 7-57-30

Wings - Flap Track No. 4 Canoes
-  Installation of Fuel Drain
-  Modification 7/2536
(A/C Serial Number 3 and Sub.)

Mar 6, 1987 May 8, 1987 'A'
DHC-7 7-24-65

Electrical Power - Special Inspection and Rectification of Circuit breakers
(A/C Serial Number 102 and all other A/C serial numbers that have had Suspect Circuit breakers Installed during In-Service Maintenance or Modification)

Jan 23, 1987 May 8, 1987 'C'
DHC-7 7-28-18

Fuel System - Wing Underside Flap Track Number 4 Canoe Special Inspection and Application of Fuel Containment Coating
- Modification 7/2518 (A/C 1 and Sub.)

May 16, 1986 May 8, 1987 'C'
DHC-7 7-52-33

Doors - Airstair Door Overcentre Spring Retention Spacers Rework
- Modification 7/2392
(A/C 1 thru 112)

Jun 29, 1984 Apr 17, 1987 'A'
DHC-6 6/447

Equipment/Furnishings - Utility Seat - Special Inspection and Forward Leg Positive Lock Installation
Mod. 6/1828
(All A/C with Side Folding Cabin Utility Seats)

Oct 14, 1983 Apr 17, 1987 'D'
DHC-7 7-27-69

Wings - Flight and Ground Spoiler Hinge Assembly Bushing Installation
- Modification 7/2260
(A/C 1 thru 112)

Mar 22, 1985 Apr 3, 1987 'A'
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 7-32-80

Landing Gear - Replacement of Restrictors/ Fittings in Selector Valve and In Emergency Extension Valve
- Modification 7/2495
(A/C 3 thru 116)

May 16, 1986 Apr 3, 1987 'B'

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