Airworthiness Directive · Amendment 39-10034 · AlliedSignal Inc. ALF502 and LF507 Series Turbofan Engines
AlliedSignal Inc. ALF502 and LF507 Series Turbofan Engines
Superseded. A later AD replaced this one: AD 2009-26-06. Comply with the one in force.
AlliedSignal Inc. (formerly Textron Lycoming) ALF502 and LF507 series turbofan engines with fuel manifold assemblies having Part Numbers (P/Ns) listed in paragraph 1(A) of AlliedSignal Service Bulletin (SB) No. ALF/LF 73-1002, dated December 22, 1995, installed on but not limited, British Aerospace Models BAe 146-100A, -200A, and -300A series; Avro International Models 146-RJ70A, -RJ85A, and -RJ100A series; and Canadair Model CL- 600-1A11 series aircraft.
This amendment adopts a new airworthiness directive (AD), applicable to AlliedSignal Inc. (formerly Textron Lycoming) ALF502 and LF507 series turbofan engines, that requires initial and repetitive on- wing eddy current or in-shop fluorescent penetrant inspections of fuel manifold assemblies for cracks, and replacement, if necessary, with serviceable parts. In addition, this AD presents an optional terminating action to the repetitive inspections by replacing the fuel manifold assembly with an assembly of a new, improved design. This amendment is prompted by reports of cracking of the fuel manifold assembly at the No. 5 scallop location. The actions specified by this AD are intended to prevent cracking of the fuel manifold assembly, which could result in an engine fire.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Engines
