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 1561 - 1580 of 1683

Bulletins RSS

Aircraft S/B No. Title Original Issue Latest Issue
DHC-7 7-23-2

Avionics - Voice Recorder Attenuation
- Modification 7/1311
(A/C 1, 2 and 4)

May 18, 1979
DHC-7 7-23-19

Communications - Attendant's Interphone System Call Light Rework
- Modification 7/1672 (A/C 1 thru 18)

Sep 16, 1983
DHC-7 7-23-18

Communications - HF System Receiver Exciter or Power Amplifier Coupler Replacement
- Modification 7/2218
(A/C 1 thru 132 with S.O.O. 7001) (HF Communication System)

Jun 17, 1983
DHC-7 7-23-17

Communications - Introduction of Diode to Flight Attendant's Panel Electrical Circuit
- Modification 7/2208 (A/C 1 thru 92)

Feb 25, 1983
DHC-7 7-23-16

Communications - Audio Control Panel -  Total Audio Recording Provision
-  Modification 7/2283
(All DHC-7 A/C with Cockpit Voice Recorder S.O.O. 7022 Installed)

Feb 4, 1983
DHC-7 7-23-15

Communications - Passenger Address System - Addition of P.A. Side Tone Flight Deck Headsets
- S.O.O. 7153
(A/C 3 and Sub. with S.O.O. 7026) (Forward Observer's Seat - Flight Compartment Installed)

Jan 24, 1983
DHC-7 7-23-14

Communications - Audio Integration System Noise Reduction
- Modification 7/2258 (A/C 3 thru 92)

Dec 22, 1982
DHC-7 7-23-13

Communications - Improved Mask Microphone
- Modification 7/2188
(A/C 1 thru 57, 59 thru 70 and 72 thru 76)

Jun 18, 1982
DHC-7 7-23-12

Communications - Addition of Interphone/ Transmitter Switch to Flight Compartment Right-Hand Sidewall
- Modification 7/1969
(A/C 1 thru 92 less 54, 62 and 66)

Mar 12, 1982 Jun 10, 1983 'B'
DHC-7 7-23-11

Communications - VHF Transceiver -  To Reduce Interference
-  Modifications 7/1840 and 7/1885
(A/C 1 thru 39 with S.O.O. 7002) (VHF Communication System)

Jan 15, 1982
DHC-7 7-23-10

Communications - Headset Cable Holder Installation
- Modification 7/1939
(A/C 1 thru 59 with SICMA Crew Seats)

Jan 8, 1982 May 7, 1982 'A'
DHC-7 7-23-1

Audio Integrating Systems - Wiring Revision
- Modification 7/1262
(A/C 1, 2 and 4)

Sep 29, 1978
DHC-7 7-22-9

Auto Flight - Autopilot Annunciator and System Coupling Switch Installation
- Modification 7/2070
(A/C 3 thru 86 and 89, 91, 94 and 95)

Oct 21, 1983 Feb 28, 1986 'B'
DHC-7 7-22-8

Auto Flight - Autopilot Controller -  Deletion of Turn Control Knob
-  Modification 7/2334
(A/C 3 thru 86, 88, 89, 91, 94 and 95)

Aug 19, 1983 Jun 21, 1996 'B'
DHC-7 7-22-7

Auto Flight - Autopilot Systems -  Aileron Servo Improvement
-  Modification 7/2328
(A/C 1 thru 83, 85, 86, 89, 94 and 95)

Mar 25, 1983 Nov 25, 1983 'B'
DHC-7 7-22-6

Autopilot Systems
(A/C 3 and Sub.)

Nov 1, 1982 Dec 13, 1983 'B'
DHC-7 7-22-5

Autopilot System - Aileron Servo Motor Installation - Special Inspection
- Modification 7/2315
(A/C 3 thru 83, 85, 86 and 89 with S.O.O. 7017)

Oct 29, 1982 May 20, 1983 'B'
DHC-7 7-22-4

Auto Flight - Rework to AFCS Relay Box
- Modification 7/1920
(A/C 28 thru 34)

Jan 15, 1982
DHC-7 7-22-3

Auto Flight - Control System -  Installation of Two Additional Relays
-  Modification7/2144 (A/C 3 thru 61)

Jan 15, 1982 Apr 12, 1982 'A'
DHC-7 7-22-20

Automatic Flight Control System - Inspection/Replacement of Elevator and Aileron Servo Drive Part Numbers.
(A/C 3 thru 113)

May 29, 2006

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