Airworthiness Directive · Amendment 39-11684 · Fokker Model F27 Series Airplanes Equipped With Rolls-Royce 532-7 “Dart 7” (RDa-7) Series Engines
Fokker Model F27 Series Airplanes Equipped With Rolls-Royce 532-7 “Dart 7” (RDa-7) Series Engines
Model F27 series airplanes, certificated in any category, as listed in Fokker F27 Service Bulletin F27/61-40, Revision 1, dated August 1, 1997.
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Fokker Model F27 series airplanes, that currently requires revising the Airplane Flight Manual (AFM) to provide the flightcrew with modified operational procedures to ensure continuous operation with the high pressure cock (HPC) levers in the lockout position. This amendment retains the requirements of the existing AD for the Normal and Abnormal Procedures Sections of the AFM, and requires incorporation of amended Limitations and Emergency Procedures Sections into the AFM. This amendment is prompted by a report that certain incorrect instructions had been included in the Emergency Procedures Section of the AFM revision required by the existing AD. The actions specified in this AD are intended to ensure that flightcrews follow correct procedures that will maintain the HPC levers in a permanent lockout position to prevent consequent burnout of the engines during flight.
To ensure that flightcrews follow correct procedures that will maintain the high pressure cock (HPC) levers in a permanent lockout position to prevent consequent burnout of the engines during flight, accomplish the following:
(a) Within 6 months after October 8, 1999 (the effective date of AD 99-18-22, amendment 39-11288): Revise the Normal and Abnormal Procedures Sections, as applicable, of the FAA-approved Airplane Flight Manual (AFM) by incorporating 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 lock withdrawal system disabled) during operation of the airplane.] This action may be accomplished by inserting a copy of MCNO F27-001 into the applicable sections of the AFM.
(b) Within 3 days after the effective date of this AD, revise the Limitations and Emergency Procedures Sections of the AFM by incorporating Fokker Manual Change Notification MCNO F27-008, dated March 1, 2000. This action may be accomplished by inserting a copy of MCNO F27-008 into the applicable sections of the AFM.
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.
Aircraft
