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 81 - 100 of 1684

Bulletins RSS

Aircraftsort ascending S/B No. Title Original Issue Latest Issue
DHC-7 7-32-30

Main Landing Gear Wheels - Insert and Drive Lug Repair Limits
(All A/C)

Sep 5, 1980
DHC-7 7-71-13

Power Plant - Introduction of Improved Power Turbine Blades -  Pratt and Whitney S/B 4064R1
(Effectivity - See Pratt and Whitney S/B 4064R1)

Feb 12, 1982
DHC-7 7-21-11

Conditioned Air System - Water Separator Insulation
- Modification 711 630
(A/C 1 thru 34)

Sep 5, 1980
DHC-7 7-29-10

Hydraulic Engine Driven Pump - Shaft Sleeve (Vespel) and a New Port Cap Introduced
- Modifications 7/1957 and 7/2048
(A/C 3 thru 50 for Modifications 7/1957 and 7/2048 A/C 51 thru 92 for Modification 7/2048 only)

Apr 26, 1982 Nov 12, 1982 'A'
DHC-7 7-55-10

Stabilizers - Installation of Water Deflector Over Elevator Servo Assembly
- Modification 7/2605
All Aircraft

Oct 25, 1991
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 7-52-21

Airstair Door - Replacement of Cam Follower and Warning Switch
- Modification 7/1966
(A/C 1 thru 39)

Apr 17, 1981 Mar 11, 1983 'A'
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 7-33-23

Lights - Emergency Lights Power Control Relay Installation
- Modification 7/2622
Serial Numbers 003 thru 113 less 25 and 70 With Modification 7/1697

Jul 28, 1995 Oct 20, 1995 'A'
DHC-7 7-24-32

Electrical Power - Busbar Protection Unit ZA29702 - Lucas Aerospace Modifications 5409U and 545OU
All A/C with above unit Installed)

Mar 27, 1981
DHC-7 7-32-46

Tail Bumper Shaft - Special Inspection and Modification
- Modification 7/2222
(A/C 1 thru 102 less 68 and 71)

Feb 10, 1982 May 27, 1983 'A'
DHC-7 7-73-5

Engine Fuel and Control - Fuel Flow Trans. Temperature Compensation Resistor
-  Relocation and Electrical Connector Replacement
-  Modification 7/2347
(A/C 3 thru 86, 89, 91, 94 and 95)

Oct 14, 1983
DHC-7 7-21-27

Air Conditioning - Replacement of Dual Gasper Fans
(A/C 1 and Sub. with S.0.0.7080)

Sep 13, 1985
DHC-7 7-30-6

Elevator Horn Deicing Heater - Thermostat Replacement
- Modification 7/1776
(A/C 1 thru 34)

Oct 31, 1980 Jan 9, 1981 'B'
DHC-7 7-57-9

Wing Structure - Spoiler Hinge Arm and Drain Seals - Change of Seal Material
- Modification 7/1683
(A/C 3 thru 27)

Nov 20, 1981
DHC-7 7-27-66

Flight Controls - Revised Elevator Trim Screw Jack Installation
- Modification 7/2393
(A/C 1 thru 102)

Jun 28, 1985
DHC-7 7-52-37

Doors - Airstair Door Sill - Introduction of Overboard Drain Valve
- Modification 7/2514
(A/C 3 thru 110)

Sep 1, 1986
DHC-7 7-25-59

Equipment/Furnishings - Protective breathing Equipment (PBE) - Addition of Mounting Provisions
- Modification 7/2584 (A/C 1 and Sub.)

May 26, 1989 Jun 23, 1989 'A'
DHC-7 7-34-15

Standby Attitude Indicator - Additional Diode Installation
- DHC E.O. 72205 (A/C 54)

Nov 20, 1981
DHC-7 7-24-48

Electrical - Master Caution Control Circuit breaker Relocation - Modification 7/2200 and Stall Warning Dual Power Source Diode Installation - Modification 7/2206
(A/C 1 thru 81 - Modification 7/2200) (A/C 1 thru 95 - Modification 7/2206)

Aug 20, 1982 Oct 15, 1982 'A'

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