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 81 - 100 of 1698

Bulletins RSS

Aircraftsort ascending S/B No. Title Original Issue Latest Issue
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 7-34-34

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 7-27-34

Flap Control System - Flap Screwjack Tracks No. 2 and 3 - To Introduce an Improved Locking Feature for Aft Bearing Nut and Greasing Provision
- Modifications 7/1591 and 7/1590 (A/C 3 thru 27 - Modification 7/1591; 3 thru 29 - Modification 7/1590)

Sep 4, 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 7-31-7

Communications - Cockpit Voice Recorder
-  Rework to Prevent Loss of Input
- S.O.O. 7141
(A/C 54, 62 and 66)

Apr 8, 1982
DHC-7 7-25-27

Furnishings - Flight Compartment Door -  Addition of Latch for Use with Observer's Seat
-  Modification 7/1749
(A/C 1 thru 34 with S.O.O. 7026)

Nov 20, 1981
DHC-7 7-57-12

Left and Right-Hand Wing Ground Spoiler Actuator Attachment Bracket - Inspection and Replacement of Rivets with Bolts
- Modification 7/1827
(A/C 1 thru 30)

Jan 15, 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 7-28-4

Fuel System - Boost Pump Wiring - To Install Protective Sleeve
- Modification 7/1572
(A/C 1 thru 17)

Apr 18, 1980 Jun 9, 1980 'A'
DHC-7 7-53-3

Rear Fuselage - To Improve Stringer Attachments to Frames at Stations X596.75 and X714.50
- Modification 7/1271
(A/C 4, 8 and 9)

Jul 13, 1979
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 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 7-27-50

Flight Controls - Ground Spoiler - Rigging Check -
DHC E.O. 72301
(A/C 1 and Sub.)

Jan 28, 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
DHC-7 7-32-12

Nose Landing Gear - Replacement of Shock Strut Assembly Upper Bearing
- Modification 7/1575
(A/C 1 thru 7, 9, 10 and 11)

Jun 8, 1979
DHC-7 7-25-43

Furnishings - Improved Aft Fuselage Under-Floor Access
- Modification 7/1352 (A/C 3 thru 27)

Jun 10, 1983
DHC-7 7-57-28

Wings - Application of Corrosion Inhibitor to Upper Wing Skin and Heat Shields
- Modification 7/2506
(A/C with Modification 7/2414)

Apr 17, 1987
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 7-28-20

Fuel - Pressure Relief and Dump Valve -  Installation of New Switch Assembly, Gaskets and Seals
-  Modification 7/2580
(A/C with Pressure Relief and Dump Valve Part Number 2800015-101 Installed)

Mar 10, 1989
DHC-7 7-53-20

Upper Airstair Door - Improve Access to Microswitch
- Modification 7/1865
(A/C 1 thru 72)

Sep 25, 1981 Feb 19, 1982 'A'

Pages