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79-11-03: Automatic Fuel Control

FAA order 79-11-03 is an airworthiness directive in force since May 31, 1979. The FAA's subject line: Automatic Fuel Control. It names the Pratt & Whitney Canada PT6T-3, Pratt & Whitney Canada PT6T-6 engines: about 13 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.

What it applies to as the FAA lists it

Kind of product
Engine
Makes
Pratt & Whitney Canada Corp.; Pratt & Whitney Canada Corp.; Pratt & Whitney Canada Corp.
Models
PT6T-3, PT6T-6
Engine series
Pratt & Whitney Canada PT6T-3 8 aircraft
Pratt & Whitney Canada PT6T-6 5 aircraft

Dates and paperwork

In force since
May 31, 1979
Docket
Unknown
Status
Current
The FAA's document
Read the order on the FAA's site

The order itself the regulatory text, as published

Show the full text (878 characters)
79-11-03 PRATT & WHITNEY AIRCRAFT OF CANADA: Amendment 39-3477. Applies to Pratt & Whitney Aircraft of Canada, Limited PT6T-3 power sections prior to serial number CP-PS 61324 and PT6T-6 power sections prior to serial number CP-PS 72321. Compliance required within the next 3000 hours in service after the effective date of this AD, unless already accomplished. To preclude automatic fuel control contamination install the P3 air filter and associated parts in accordance with Paragraph 2, Accomplishment Instructions in Pratt & Whitney Aircraft of Canada, Ltd. Engine Service Bulletin No. 5124 thru Revision 3 or approved equivalent procedures and parts. Equivalent procedures and parts must be approved by the Chief, Engineering and Manufacturing Branch of the Eastern Region of the Federal Aviation Administration (FAA). This amendment is effective May 31, 1979.

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 5, 2026. Connections as data: /graph/directive/79-11-03.json · aircraft systems.