Airworthiness Directive · Amendment 39-9181 · AlliedSignal Inc. TFE731-3 Series Turbofan Engines
AlliedSignal Inc. TFE731-3 Series Turbofan Engines
AlliedSignal Inc. (formerly Garrett Turbine Engine Company) TFE731-3, -3A, -3AR, -3B, -3BR, and -3R turbofan engine models installed on but not limited to Avions Marcel Dassault Falcon 50, Lockheed 1329-23, -25 series (731 Jetstar, Jetstar II), Israel Aircraft Industries (IAI) Ltd. 1124 (Westwind), Raytheon Corporate Jets Inc. (formerly British Aerospace) (BAe) DH/HS/BH 125 series, Learjet 55 series, Cessna 650 Citation III, VI, Sabreliner NA-265 series (Sabreliner 65). This airworthiness directive (AD) is not applicable to TFE731-3A-300G and TFE731-3AR-200G engines installed on IAI 1125 Westwind Astra aircraft.
This amendment adopts a new airworthiness directive (AD), applicable to AlliedSignal Inc. (formerly Garrett Turbine Engine Company) TFE731-3 series turbofan engines, that requires the removal of suspect low pressure turbine (LPT) disks due to their susceptibility to creep fatigue. This amendment is prompted by reports of LPT disks that have separated through the disk web due to creep fatigue. The actions specified by this AD are intended to prevent an LPT disk web separation, which may result in an uncontained engine failure and damage to the aircraft.
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
