74-26-05: Fuel Control Units

FAA order 74-26-05 is an airworthiness directive in force since January 2, 1975. The FAA's subject line: Fuel Control Units. It names the Pratt & Whitney Canada JT15D-1, Pratt & Whitney Canada JT15D-4 engines: about 516 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.
Models: JT15D-1, JT15D-4
Engine series: Pratt & Whitney Canada JT15D-1 159 aircraft
Pratt & Whitney Canada JT15D-4 357 aircraft

Dates and paperwork

In force since: January 2, 1975
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 (994 characters)

74-26-05	PRATT & WHITNEY AIRCRAFT and UNITED AIRCRAFT OF CANADA, LIMITED: Amendment 39-2046.  Applies to all Pratt & Whitney Aircraft and United Aircraft of Canada Limited JT15D-1 and JT15D-4 turbofan engines containing fuel control P/Ns 3022332 and 3023349. 

	Compliance required within the next 25 hours time in service after the effective date of this AD unless already accomplished.
 
	To prevent fuel leaks, inspect fuel control units for possible interference between the fuel outlet housing and the fuel control main body by placing a .003 inch feeler gage between the mating faces of the fuel outlet housing (P/N 3240082) and the fuel control main body (P/N 3240451).  If the feeler gage can be inserted between the mating faces, replace fuel control with dimensionally correct fuel control prior to next flight.
 
	United Aircraft of Canada Limited's Special Instruction No. 3-74, dated September 20, 1974, pertains to this subject.
 
	This amendment becomes effective January 2,1975.

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/74-26-05.json · aircraft systems.