2000-23-03: Liftdumper Micro Switches

2000-23-03 FOKKER SERVICES B.V.: Amendment 39-11973. Docket 2000-NM-293-AD. Applicability: All Model F.28 Mark 1000, 2000, 3000, and 4000 series airplanes, certificated in any category. NOTE 1: This AD applies to each airplane 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 airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (b) 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 detect and correct improper rigging of the liftdumper micro switches, which could result in inadvertent extension of the liftdumpers during takeoff roll, accomplish the following: Inspection and Functional Check (a) Within 2 months after the effective date of this AD: Perform a one-time general visual inspection for proper rigging of the liftdumper micro switches installed in the left- and right-hand sides of the pedestal; and a functional check of the micro switches; as specified in Fokker Service Bulletin F28/27-186, including Manual Change Notification MCNM F28-020, dated May 8, 2000. Perform the inspection and the check in accordance with the Accomplishment Instructions of the service bulletin. If the micro switches are not rigged within the specifications provided in the service bulletin, prior to further flight, re-rig the cam in accordance with the service bulletin. NOTE 2: For the purposes of this AD, a general visual inspection is defined as: "Avisual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or drop-light, 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." 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 Maintenance Inspector, who may add comments and then send it to the Manager, International Branch, ANM-116. NOTE 3: 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 Service Bulletin F28/27-186, including Manual Change Notification MCNM F28-020, dated May 8, 2000. 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 4: The subjectof this AD is addressed in Dutch airworthiness directive 2000-073, dated May 31, 2000. Effective Date (e) This amendment becomes effective on December 20, 2000.