AD 92-02-18

92-02-18 GARRETT ENGINE DIVISION, ALLIED-SIGNAL INCORPORATED: Amendment 39-8445. Docket No. 92-ANE-61. Applicability: Garrett Engine Division, Allied-Signal Incorporated, Model TFE731-5BR turbofan engines installed on but not limited to Dassault Aviation Model Mystere Falcon 20 and 900 series airplanes. Compliance: Required prior to further flight, unless accomplished previously. To prevent multiple inflight engine failures, accomplish the following: (a) For engines identified on the data plate as Part Number (P/N) 3075330-2 or P/N 3075370-1, discontinue inflight operation. (b) This AD is an interim directive until approved corrective action is available. (c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Los Angeles Aircraft Certification Office. The request should be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and thensend it to the Manager, Los Angeles Certification Office. NOTE: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Los Angeles ACO. (d) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (e) This amendment becomes effective on February 10, 1993, to all persons except those persons to whom it was made immediately effective by priority letter AD 92-02-18, issued January 14, 1992, which contained the requirements of this amendment.