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 161 - 180 of 1697

Bulletins RSS

Aircraftsort ascending S/B No. Title Original Issue Latest Issue
DHC-7 7-30-10

Airframe Deicing System - Horizontal Stabilizer Water Separator
- Special Inspection and Rectification (A/C 4 thru 57, 59 thru 64, 69, 70)

Feb 26, 1982
DHC-7 7-21-12

Cabin Pressurization Control and Drainage System - To Overcome Freezing in Severe Cold Conditions
- Modification 711 652
(A/C 1 thru 39)

Mar 20, 1981
DHC-7 7-57-13

Wing Outboard Leading Edge - Addition of Foam Blankets
- Modification 7/1853
(A/C 1 thru 34)

Mar 26, 1982 Aug 13, 1982 'A'
DHC-7 7-53-4

Rear Fuselage - Refuel/Defuel Control Panel Access Door Hold - Open Spring
- Modification 7/1488
(A/C 1 thru 10)

Jun 15, 1979
DHC-7 7-27-46

Flight Controls - Ground Spoiler Control System Functional Check and Rectification
- Modifications 7/2294 and 7/2296
(A/C 1 thru 93)

Sep 20, 1982 Dec 17, 1982 'B'
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 7-25-39

Furnishings - Underwing Bin Filler Panel Replacement
- Modification 7/1793 (A/C 1 thru 39)

Apr 12, 1982
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-7 7-32-81

Landing Gear - Flap/Landing Gear Warning Horn Circuit Revision
- Modification 7/2502
(A/C with Modification 7/2202)

Jun 13, 1986
DHC-7 7-30-26

Ice and Rain Protection - Deicer Distributor Valve - Incorporation of High Temperature Components
- Modification 7/2551
(A/C 1 thru 108)

Dec 18, 1987
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-7 A7-27-86

Flight Controls - Special Inspection and Rectification of Flap Indication Circuit in Flap Position Trim Control Box Assembly Serial Numbers 3 and subsequent with Modification 7/2093. Aircraft with Customer Special Installation 78358 (flap indication rework) are excluded

Dec 19, 1991
DHC-7 7-57-29

Wings - Installation of Stainless Steel Washers on Heat Shields
- Modification 7/2507
(A/C with Modification 7/2414)

Aug 1, 1986 Apr 15, 1988 'B'
DHC-7 7-53-21

Fuselage Structure - To Provide Drain Trough Under Centre Floor Panel
- Modification 7/1914
(A/C 1 thru 72)

Feb 26, 1982
DHC-7 7-27-62

Flight Controls - High Temperature Bonded Ground and Flight Spoilers
- Modifications 7/2356 and 7/2357
(A/C 1 thru 115)

May 31, 1985
DHC-7 7-39-1

Barometric Standby Altimeter
-  Co-pilot's Installation
-  Modification 7/1522
(A/C 1, 2, 3 and 7 thru 12)

Sep 28, 1979
DHC-7 7-25-55

NOT ISSUED

DHC-7 7-24-49

AC Electrical System - Voltage Suppressors and Relays Replacement
- Modification 7/2092 (A/C 1 thru 112)

Feb 25, 1983 Mar 22, 1985 'A'
DHC-7 7-76-8

Engine Controls - Centre Console -  Replacement of Anchor Nuts on Cover with Studs
-  Modification 7/1525
(A/C 1 thru 10)

Sep 16, 1983
DHC-7 A7-32-97

Landing Gear - Initial Inspection and Test of Hydraulic Selector Valve Sterer
Part Number 57420 or 57420-3
Serial Numbers 3 thru 110 without Modification 7/2516

Nov 10, 1992

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