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 241 - 260 of 1684

Bulletins RSS

Aircraft S/B No.sort ascending Title Original Issue Latest Issue
DHC-7 7-71-21

Power Plant - Replacement of Rear Fireseal Bolt
- Modification 7/2322
(A/C 3 thru 112)

Feb 24, 1984
DHC-7 7-71-20

Power Plant - Exhaust Case Drain -  Special Inspection and Rectification
-  Modification 7/2394
(A/C 1 and Sub.)

Jan 26, 1984 Mar 17, 1995 'D'
DHC-7 7-71-2

Power Plant - Closure Plate for A.C. Generator Mounting Pad
- Modification 7/1339
(A/C 1 thru 4, 6, 7 and 9 thru 12)

Dec 15, 1978 Dec 12, 1980 'B'
DHC-7 7-71-19

Power Plant - Forward and Centre Engine Cowlings - Improved Exhaust Duct Seals
- Modification 7/2050
(A/C 1 thru 102)

Dec 17, 1982
DHC-7 7-71-18

Power Plant - Engine Fuel Flow Drain Relocation
- Modification 7/2175
(A/C 3 thru 86, 89, 91, 94 and 95 with Modification 7/1356)

Jan 21, 1983 Oct 12, 1984 'B'
DHC-7 7-71-17

Power Plant - Electrical Cable Assembly and Connectors Replacement
- Modification 7/2196
(A/C 1 thru 112)

Sep 24, 1982 Apr 18, 1984 'C'
DHC-7 7-71-16

Power Plant - Improved Small Combustion Chamber Exit Duct Assembly - Pratt and Whitney S/B 6071
(All A/C with PT6A-50 Engines Prior to Serial Number PC-E86433)

Jun 18, 1982
DHC-7 7-71-15

Power Plant - Torquemeter Cylinder - Pratt and Whitney S/B 4066
(All A/C with PT6A-50 Engines Prior to Serial Number PC-E86272)

Jun 18, 1982
DHC-7 7-71-14

Power Plant - Compressor Turbine Vane Ring -  Pratt and Whitney S/Bs 4069 and 4061
(Effectivity - See Pratt and Whitney S/Bs 4069 and 4061)

Feb 19, 1982
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 7-71-12

Compressor Wash Installation
-  Modification 7/1524 (A/C 3 thru 27)

Aug 13, 1982
DHC-7 7-71-11

Power Plant - Compressor Bleed Valve Assembly - Pratt and Whitney S/B 4067 (Effectivity - See Pratt and Whitney S/B 4067)

Feb 19, 1982 Jun 25, 1982 'A'
DHC-7 7-71-10

Power Plant - Top Rear Engine Mount Replacement
- Modification 7/1936
(A/C 1 thru 58)

Dec 11, 1981
DHC-7 7-61-9

Propellers - Analytical and Major Inspection
-  Hamilton Standard S/B 61-1022
(Effectivity - See Hamilton Standard S/B 61-1022)

Oct 9, 1981 Nov 15, 1985 'B'
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-7 7-61-7

Propellers - Blades - Erosion Protection of Heater Leading Edge
-  Hamilton Standard S/B 61-1026
(Effectivity - See Hamilton Standard S/B 61-1026)

Oct 9, 1981
DHC-7 7-61-6

Propellers - Removal and Replacement of Propeller Extension Dome Assemblies or Dome Extensions
-  Hamilton Standard Alert S/B A23
(Effectivity - See Hamilton Standard Alert S/B A23)

Mar 13, 1981
DHC-7 7-61-5

Propellers - To Introduce Thicker Propeller Shaft Flange and Longer Propeller Mounting Bolts
- Modification 7/1663
(A/C 1 thru 25 and 27)

Mar 20, 1981
DHC-7 7-61-4

Propeller - Special Inspection and Replacement of the Beta Feedback Sleeve to Reduce Sleeve Diameter and Introduce Chromeplating in Lieu of Silver Plating
- Modification 7/1906
(A/C 3 thru 29
A/C 30 thru 40 incorporated by E.O. 72054)

Feb 13, 1981
DHC-7 7-61-3

Propeller - Synchrophase Control Unit Type Change
- Modification 7/1582
(A/C 1 thru 27)

Aug 15, 1980 Oct 24, 1980 'A'

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