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 1621 - 1640 of 1697

Bulletins RSS

Aircraft S/B No. Title Original Issue Latest Issue
DHC-7 7-21-23

Air Conditioning - Introduction of Spring - Loaded Bleed Air Duct Retention Bolts
- Modification 712342

Mar 16, 1984
DHC-7 7-21-22

Air Conditioning - Cabin Temperature Bias Selector and Fan Assisted Flight Compartment Temperature Sensor Installation
- S.O.O. 71 50
(All DHC -7 A/C)

May 4, 1984
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 7-21-20

Air Conditioning System - Gasper Fan Control Circuit Rework
- Modification 7/21 93
(A/C 40 thru 89 and 91 less Serial Numbers 41, 43 and 45, 46, 53 thru 57, 66, 76 and 77)

Aug 13, 1982
DHC-7 7-21-2

Cabin Pressurization Control System Heater Installation
- Modification 711391
(A/C 1 thru 7 and 9)

Nov 21, 1978
DHC-7 7-21-19

Air Conditioning - Low Pressure Bleed Check Valve - Replacement
- Modification 712239
(A/C 1 thru 102)

Mar 25, 1983 May 20, 1983 'A'
DHC-7 7-21-18

Air Conditioning System - Addition of Check Valve In Ground Air Supply
- Modification7/2161
(A/C 40, 42, 44, 47, 48, 49, 51, 52, 58, 59, 60, 61, 63, 64 and 65)

Jun 18, 1982
DHC-7 7-21-17

Air Conditioning - Improved Gasper Outlet Valves
- Modification 711 924
(NC 13 thru 72)

Apr 12, 1982
DHC-7 7-21-16

Air Conditioning - Bleed Air Temperature Control Valve - Improved Mounting Installation
- Modification 7/1720 (A/C 1 thru 22)

Dec 4, 1981
DHC-7 7-21-15

Air Conditioning - Cabin Temperature and Anti - Ice Controllers - Replacement of Current Limiting Resistor With Fuse (Effectivity - See Hamilton Standard S/B 21 -2032)

Oct 2, 1981
DHC-7 7-21-14

Air Conditioning - Cabin Pressure Controller Replacement
- Modification 711 933
(A/C 1 thru 48)

Aug 21, 1981 Nov 13, 1981 'A'
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 7-21-11

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

Sep 5, 1980
DHC-7 7-21-10

Pressurization System - Outflow Valves Noise Reduction
- Modification 711699
(A/C 1 thru 27, less 10)

Jun 20, 1980
DHC-7 7-21-1

Nose Avionics Bay - Additional Cooling Fan
- Modification 711378 (A/C 3, 4, 7 and 9)

Aug 31, 1978
DHC-7 7-21 -13

Air Cycle Machine - Heat Exchanger Duct Joint Improvements
- Modification 711 783
(DASH -7 - With Heat Exchangers)

Jul 3, 1981
DHC-7 7-11-9

Cabin Pressure Data Label
- Modification 7/1659 (A/C 1 thru 17)

Mar 7, 1980
DHC-7 7-11-8

Hydraulic System - Introduction of Caution Label at Ground Connection Panel
- Modification 7/1398
(A/C 1 thru 10 and 12)

Jul 20, 1979
DHC-7 7-11-7

Aircraft Operation at 44,000 lb. All Up Weight
(A/C 3 thru 7, 9 and 10) following Incorporation of Modifications 7/1271, 7/1337 and 7/1393)

Feb 15, 1979
DHC-7 7-11-6

Cargo Door - To Add Caution Label
- Modification 7/1470 (A/C 7 and 9)

Feb 23, 1992

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