Airworthiness Directive · Amendment 39-13751 · Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes
Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes
Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 series airplanes; certificated in any category; on which one or more of the modifications specified in paragraph 1.A.(1) of Fokker Service Bulletin F27/54-53, dated February 15, 2002, has been done.
This amendment adopts a new airworthiness directive (AD), applicable to certain Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 series airplanes, that requires a one-time inspection to determine the part number of the engine mounting frames, brace struts, and attachment fittings; and related corrective action. This action is necessary to ensure the structural integrity of the engine-to-wing load path and prevent possible separation of the engine from the airplane. This action is intended to address the identified unsafe condition.
To ensure the structural integrity of the engine-to-wing load path and prevent possible separation of the engine from the airplane, accomplish the following:
(a) Within 24 months after the effective date of this AD: Do a one-time general visual inspection to determine the part numbers of the engine mounting frames, brace struts, and attachment fittings; per the Accomplishment Instructions of Fokker Service Bulletin F27/54-53, dated February 15, 2002. Do the inspection and corrective action per the Accomplishment Instructions of the service bulletin. Do the related corrective action before further flight.
Note 1: For the purposes of this AD, a general visual inspection is defined as: “A visual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity. This level of inspection is made from within touching distance unless otherwise specified. A mirror may be necessary to enhance visual access to all exposed surfaces in the inspection area. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or droplight and may require removal or opening of access panels or doors. Stands, ladders, or platforms may be required to gain proximity to the area being checked.”
Note 2: Fokker Service Bulletin F27/54-53, dated February 15, 2002, references Fokker Service Bulletin 51-24, dated December 1, 1971, as the appropriate source of service information for installing a new, improved engine mounting frame; and Fokker Service Bulletin F27/54-26, Revision 5, dated September 30, 2001, as the appropriate source of service information for installing new, improved, stronger brace struts and brackets.
(b) As of the effective date of this AD, no person may install on any airplane an engine mounting frame, brace strut, or attachment fitting unless that part has been identified as appropriate for the airplane configuration, as specified in the Accomplishment Instructions of Fokker Service Bulletin F27/54-53, dated February 15, 2002.
(c) In accordance with 14 CFR 39.19, the Manager, International Branch, ANM-116, FAA, Transport Airplane Directorate, is authorized to approve alternative methods of compliance for this AD.
