AD 2009-06-14 Airworthiness Directives; Fokker Model F.27 Mark 050 Airplanes

Models named: F.27 Mark 050. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to all Fokker Model F.27 Mark 050 airplanes, certificated in any category.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Measurement, Inspection, and Corrective Actions (g) Within 500 flight cycles after the effective date of this AD, measure the length of the extended portion of the sliding member of the main landing gear in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF50-32-039, dated July 2, 2007. Repeat the measurement at intervals not to exceed 500 flight cycles until the requirements of paragraph (g) have been completed. (h) At the applicable time in paragraph (h)(1) or (h)(2) of this AD, perform an inspection for the presence and correct installation of lockwiring on the two end stop lock bolts of the main landing gear, in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF50-32-039, dated July 2, 2007. If lockwiring is not present or is not installed correctly, install lockwiring before further flight in accordance with Fokker Service Bulletin SBF50-32-039, dated July 2, 2007. (1) During any measurement required by paragraph (g) of this AD, if overextension is found, or the measurement has increased by 1.0 millimeter (mm) or more compared to the previous measurement, inspect before further flight. (2) If no overextension is found and the measurement has not increased by 1.0 mm or more between measurements during the measurements required by paragraph (g) of this AD, inspect within 4,000 flight hours after the effective date of this AD. Note 1: Fokker Service Bulletin SBF50-32-039, dated July 2, 2007, refers to Messier-Dowty Service Bulletin F50-32-62, dated January 17, 2007, as an additional source of service information for measuring the length of the extended portion of the sliding member of the main landing gear, performing an inspection for the presence of lockwiring on the lock bolts of the two end stops, and installing new lockwiring. (i) If, during any measurement required by paragraph (g) of this AD, overextension is found or the measurement has increased by 1.0 mm or more compared to the previous measurement; or if, during any inspection required by paragraph (h) of the AD, lockwiring is not present or is not installed correctly; submit a report to Fokker Services B.V., Technical Services Dept., P.O. Box 231, 2150 AE Nieuw-Vennep, the Netherlands; facsimile (31) 252-627-211; e-mail technicalservices.fokkerservices@stork.com, at the applicable time specified in paragraph (i)(1) or (i)(2) of this AD. The report must include any finding of overextension or incorrect lockwiring to Fokker Services B.V., Technical Services Dept., P.O. Box 231, 2150 AE Nieuw-Vennep, the Netherlands; facsimile (31) 252-627-211. Under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq. ), the Office of Management and Budget (OMB) has approved the information collection requirements contained in this AD and has assigned OMB Control Number 2120-0056. (1) If the inspection or measurement was done on or after the effective date of this AD: Submit the report within 30 days after the inspection or measurement, as applicable. (2) If the inspection or measurement was accomplished prior to the effective date of this AD: Submit the report within 30 days after the effective date of this AD. (j) As of 5 months after the effective date of this AD: No person may install a main landing gear on any airplane unless Part B of Messier-Dowty Service Bulletin F50-32-62, dated January 17, 2007, has been accomplished for that part. Alternative Methods of Compliance (AMOCs) (k) The Manager, International Branch, ANM-116, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Tom Rodriguez, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 227-1137; fax (425) 227-1149. Before using any approved AMOC on any airplane to which the AMOC applies, notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office. Related Information (l) Civil Aviation Authority—The Netherlands (CAA-NL) Airworthiness Directive NL-2007-002, dated October 31, 2007, also addresses the subject of this AD. Material Incorporated by Reference (m) You must use Fokker Service Bulletin SBF50-32-039, dated July 2, 2007; and Messier-Dowty Service Bulletin F50-32-62, dated January 17, 2007; as applicable; to perform the actions that are required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. (2) For Fokker service information identified in this AD, contact Fokker Services B.V., Technical Services Dept., P.O. Box 231, 2150 AE Nieuw-Vennep, the Netherlands; Telephone +31 (0)252-627-350; fax +31 (0)252-627-211; e-mail technicalservices.fokkerservices@stork.com; Internet http://www.myfokkerfleet.com. (3) For Messier-Dowty service information identified in this AD, Messier-Dowty Limited, Cheltenham Road, Gloucester, GL2 9QH, England; Telephone +44 (0) 1452 711732; fax +44 (0) 1452 713821. (4) You may review copies of this service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425-227-1221 or 425-227-1152. (5) You may also review copies of the service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html . Issued in Renton, Washington, on February 27, 2009. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E9-5007 Filed 3-13-09; 8:45 am] BILLING CODE 4910-13-P

This AD results from a report that the sliding member of the main landing gear has been overextended after landing. We are issuing this AD to detect and correct improper installation of the lockwire on the two lockbolts that hold the sliding member end stop, which could result in structural damage of the main gear and loss of control of the airplane during the landing roll, due to main landing gear overextension.