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99-18-22 FOKKER: Amendment 39-11288. Docket 98-NM-364-AD. Issued August 27, 1999.
Applicability: Model F27 series airplanes, as listed in Fokker F27 Service Bulletin F27/61-40, Revision 1, dated August 1, 1997; certificated in any category.
Compliance: Required as indicated, unless accomplished previously.
To prevent turbine burnout of the engines during flight by ensuring that the high pressure cock (HPC) levers are in a permanent lockout position, accomplish the following: AFM Revision
(a) Within 6 months after the effective date of this AD: Revise the Emergency, Normal, and Abnormal Procedures Sections, as applicable, of the FAA-approved Airplane Flight Manual (AFM) by incorporation of Fokker F27 Service Bulletin F27/61-40, Revision 1, dated August 1, 1997; including Fokker F27 Manual Change Notification (MCNO) F27-001, dated June 30, 1997. [MCNO F27-001 specifies procedures for placing the HPC levers in a permanent lockout position (with the cruise lockwithdrawal system disabled) during operation of the airplane.] This action may be accomplished by inserting a copy of the MCNO into the AFM.
Alternative Methods of Compliance
(b) 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, International Branch, ANM-116, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Operations Inspector, who may add comments and then send it to the Manager, International Branch, ANM-116.
NOTE 1: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the International Branch, ANM-116.
Special Flight Permits
(c) 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.
Incorporation by Reference
(d) The actions shall be done in accordance with Fokker F27 Service Bulletin F27/61-40, Revision 1, dated August 1, 1997; including Fokker F27 Manual Change Notification (MCNO) F27-001, dated June 30, 1997. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Fokker Services B.V., P.O. Box 231, 2150 AE Nieuw-Vennep, The Netherlands. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.
NOTE 2: The subject of this AD is addressed in Dutch airworthiness directive 1996-130 (A), dated October 31, 1996.
(e) This amendment becomes effective on October 8, 1999.
FOR FURTHER INFORMATION CONTACT: Norman B. Martenson, Manager, InternationalBranch, ANM-116, FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425) 227-2110; fax (425) 227-1149.
