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 61 - 80 of 1696

Bulletins RSS

Aircraft S/B No. Title Original Issue Latest Issuesort descending
DHC-7 7-31-3

Communications - Cockpit Voice Recorder Model AV-557B Installation or Provisions for Underwater Locating Device (ULD)
- S.O.O. 7073
(A/C 1 and Sub. as required)

Jan 16, 1981
DHC-3 3/16

Float Deck Rear Fitting 55-S-618 (EDO) Special Inspection

Apr 2, 1971
DHC-7 7-21-4

Air Conditioning - Foot Warmer - To Improve Heat Supply to Flight Crew
- Modification 711528
(A/C 1 thru 12)

Jul 6, 1979
DHC-6 6/184

Wheel - Skis Main - Installation of Torsion Spring Trim
Mod. 6/1236
(All A/C)

Sep 18, 1969
DHC-2 2/44

Landing Gear - Main Gear Compression and Rebound Blocks - Replacement with Blocks made from Polyurethane - Modification No. 2/1539

May 27, 1988
DHC-7 V7-27-02

Solenoid Valve Second Stage Flap Dump - Screw Replacement

Oct 18, 2007
DHC-6 6/104

Cabin Ventilation - Re-designed Air Intake Scoop - Introduction
Mod. 6/1105
(A/C 1 thru 135)

Feb 21, 1968
DHC-7 7-27-57

Flaps Primary Drive Torque Tubes Replacement
- Modification 7/1994 (A/C 1 thru 88)

Sep 23, 1983
DHC-2 TB/24

Radio Cables on Single Throw-Over Control Column -
Inspection & Rectification for Fouling

May 17, 1968
DHC-7 7-71-5

Forward Engine Firewall Rework -  To Accommodate Pratt and Whitney Synchrophaser Trimmer Head Housing -  Modification 7/1760
(A/C 1 thru 25)

Nov 28, 1980
DHC-7 7-25-51

Equipment/Furnishings - Installation of Placard and Cutting of Hole in Fairing to Aid in Rigging of Airstair Door Mechanism
- Modification 7/2483
(A/C 1 thru 107 less 15)

Aug 1, 1986
DHC-6 V6/0027

NOT ISSUED

DHC-6 6/54

Navigation Lights - Wing Tip Indicator
Mod. 6/1024
(A/C 1 thru 14)

Oct 13, 1967
DHC-7 7-24-26

A.C. Generator Type AE2132 MK3 and MK4 - Improved Fan Bush and Main Exciter Rotor (A/C with A.C. Generators AE2132 MK3 or MK4)

Oct 10, 1980
DHC-6 V6/0037

NOT ISSUED

DHC-6 6/490

Landing Gear/Nose Shock Strut - Replacement of Lower Bearing
Mod. 6/1858
(A/C 1 thru 831 with Mod. 6/1566 Incorporated)

Oct 17, 1986
DHC-7 7-32-9

Main Landing Gear - Replacement of Shock Strut Assembly Upper Bearing
- Modification 7/1574
(A/C 1 thru 7, 9 and 10)

May 18, 1979
DHC-3 3/33

Float Installation Drain Tube Assembly - Installation Check

Nov 4, 1977
DHC-7 7-21-21

Air Conditioning - Removal of Pressurization System Flight Compartment Solenoid Dump Valve
- Modification 711446
(A/C 1 thru 10)

Sep 2, 1983
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

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