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 & CL Aircrafts

Manual Status List – DHC-2 to DHC-7

Manual Status List - CL-215/215T/415/415MP

To obtain a subscription to a digital library, please contact ATP:

For more information on digital technical publications, please contact technical.support@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 1 - 20 of 1691

Bulletins RSS

Aircraft S/B No. Title Original Issue Latest Issuesort descending
DHC-7 7-34-40

Navigation - Installation of Structural Provisions for a Traffic Alert and Collision Assurance System (TCAS)
- Modification 7/2598
(A/C with Bendix/King, Collins or Honeywell TCAS Installations)

Jan 25, 1991
DHC-6 6/409

Electrical - Lightning Protection - Fin Cap and Wing Tip Lighting
Mods. 6/1745 and 6/1746
(A/C 1 thru 770)

Oct 9, 1981
DHC-7 7-25-11

Overhead Stowage Bin Door - Inspection for Fouling (A/C 1 and Sub.)

Oct 3, 1980
DHC-7 7-32-87

Landing Gear - Main Landing Gear - Special Check of all Retraction Actuators Part Number 15400
(A/C 1 and Sub.)

Dec 4, 1987
DHC-6 6/329

Nose Gear Instruction Label
Mod. 6/1541
(All A/C and Spares)

Apr 29, 1975
DHC-7 7-24-47

Electrical - Relocation of Resistor 3120-R2 on Relay Panel No. 4 - Modification 7/2016 (A/C 28 thru 41 - Modification 7/1452 (Digital Elapsed Time Clock)
(A/C 42 thru 92 - Modification 7/2016 by E.O. 74908 Prior to Delivery)

Aug 20, 1982
DHC-7 7-61-8

Propellers - Incorporation of Improved Bearing Race
-  Hamilton Standard S/B 61-1027
(Effectivity - See Hamilnto Standard S/B 61-1027)

Oct 9, 1981
DHC-6 6/195

Main and Auxiliary Battery Blocking Diodes
Mod. 6/1283
(A/C 1 thru 310)

Sep 17, 1969
DHC-7 7-29-6

Hydraulic System - Piping in Wing
- Special Inspection
(A/C 1 thru 20)

Feb 22, 1980
DHC-6 6/249

J.B. Systems Inc. - S/B 007 - To Modify Wiring Harness
(A/C 1 thru 289)

Sep 18, 1970
DHC-6 6/499

Wings - Introduction of Alternate Wing Access Hole Plugs - Change of Material
Mod. 6/1883
(A/C with Mod. 6/1869 Incorporated)

Oct 23, 1987
DHC-7 7-22-12

Auto Flight - Introduction of Auto Pilot Disconnect Audible Alert Unit
- S.O.O. 7186
(A/C 3 and Sub. without Modification 7/2545)

Mar 4, 1988
DHC-7 7-54-7

Nacelle Aft End Fairing Doors -  To Replace Bungee Cord Spring with Steel Wire Coil Springs
-  Modification 7/1374
(A/C 1 thru 4, 6, 7, 9 and 10)

May 25, 1979
DHC-6 6/115

A/C Power Supply System - OneTime Inspection and Rectification
(A/C 1 thru 135)

Apr 1, 1968
DHC-6 6/72

Cabin Heat - Potentiometer Replacement to Increase Range of Temperature Control
Mod. 6/1054
(A/C 1 thru 55)

Dec 20, 1967
DHC-6 6/419

Flying Controls - Elevator Stop Cable Adjustment
Mod. 6/1747
(A/C 1 thru 750)

Jan 29, 1982
DHC-2T V2/0007 ASB

Inspection and/or Replacement of MS21042 Locknut in Horizontal Stabilizer (P/N C2TP1A)

Apr 29, 2013
DHC-2 2/20

Not applicable

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-3 3/51

Fuselage - Inspection/Rectification of Loose Rivets in Flight Compartment-to-Cabin Frame at Station 111.00

Jan 26, 1996

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