98-17-01 R1: Flex Fuel Tube

98-17-01 R1 ALLIEDSIGNAL INC: Amendment 39-11332. Docket 97-ANE-51-AD. Revises AD 98-17-01, Amendment 39-10703. Issued September 16, 1999. Applicability: AlliedSignal Inc. (formerly Allied-Signal Aerospace Company, Garrett Engine Division and Garrett Turbine Engine Co.) TFE731-2, -3, and -4 series turbofan engines with fuel tubes, part numbers (P/Ns) 3071051-1, 3073729-1, or 3072886-1, installed. These engines are installed on but not limited to the following airplanes: Avions Marcel Dassault Falcon 10, 50, and 100 series; Cessna Model 650, Citation III, VI, and VII; Learjet 31 (M31) 35, 36 and 55 series, Raytheon British Aerospace HS-125 series; and Sabreliner NA-265-65. NOTE 1: This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For engines that have been modified, altered, or repaired so that theperformance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. Compliance: Required as indicated, unless accomplished previously. To prevent cracked fuel tubes and the subsequent leakage of fuel on and around electrical components, which can cause an engine fire, accomplish the following: (a) Except for engines installed on Learjet 35, 36, and 55 airplanes, within 160 hours time-in-service (TIS) after the effective date of this AD, or prior to December 20, 1999, whichever occurs first, install an improved flexible fuel tube, as follows: (1) For engines installed on Cessna airplanes, install inaccordance with the Accomplishment Instructions of AlliedSignal Inc. Alert Service Bulletin (ASB) No. TFE731-A73-3132, dated April 9, 1997. (2) For engines installed on all other airplanes except for the Learjet 35, 36 and 55 series, install in accordance with the Accomplishment Instructions of AlliedSignal Inc. ASB No. TFE731-A73-3128, dated February 26, 1997. (b) For engines installed on Learjet 35, 36, and 55, the improved flex tube and the clamp assembly installed on the original rigid fuel tube are optional. If the clamp assembly is used, install the clamp assembly in accordance with the Accomplishment Instructions of AlliedSignal Inc. SB No. TFE731-73-3107, Revision 4, dated April 20, 1994. (c) An alternative method of compliance or adjustment of the initial compliance time that provides an acceptable level of safety may be used if approved by the Manager, Los Angeles Aircraft Certification Office. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Los Angeles Aircraft Certification Office. NOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Los Angeles Aircraft Certification Office. (d) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. (e) The actions required by this AD shall be done in accordance with the following AlliedSignal Inc. service documents: Document No. Pages Revision Date ASB TFE731-A73-3132 1-12 Original April 9, 1997 Total pages: 12. ASB TFE731-A73-3128 1-14 Original February 26, 1997 Total pages: 14. SB TFE731-73-3107 1-8 4 April 20, 1994 Total pages: 8. (f) The incorporation by reference of AlliedSignal Inc. ASB TFE731-A73-3132, dated April 9, 1997, and ASB TFE731-A73-3128, dated February 26, 1997, was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51 as of May 19, 1999. (g) The incorporation by reference of AlliedSignal Inc. SB TFE731-73-3107, Revision 4, dated April 20, 1994, was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. (h) Copies of these service documents may be obtained from AlliedSignal Aerospace, Attn: Data Distribution, M/S 64-3/2101-201, PO Box 29003, Phoenix, AZ 85038-9003; telephone (602) 365-2493, fax (602) 365-5577. Copies may be inspected at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, NW, suite 700, Washington, DC. (i) This amendment becomes effective on November 29, 1999.