AD 2005-20-21 Airworthiness Directives; Fokker Model F27 Mark 050 Airplanes

Models named: F27 Mark 050. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Fokker Model F27 Mark 050 airplanes, certificated in any category, as identified in Fokker Service Bulletin SBF50-61-023, dated November 3, 2004.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Pre-Flight Checks (f) Before the next flight after the effective date of this AD: Do a visual check for oil leaks between the spinner and the engine cowling, and from directly behind the heated intake lip, of both engines, in accordance with Fokker All Operator Message (AOM) AOF50.037 (Ref TS04.57535), dated November 2, 2004. Repeat the visual check thereafter before each flight. If any leak is found, before further flight, do the action in paragraph (g) of this AD. Repetitive Detailed Inspections (g) Except as required by paragraph (f) of this AD, at the applicable time in paragraph (g)(1) or (g)(2) of this AD: Do a detailed inspection for oil leaks at the feathering pump on both engines and do any applicable corrective action before further flight. Do all actions in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF50-61-023, dated November 3, 2004. Repeat the detailed inspection thereafter at the applicable interval in paragraph (g)(1) or (g)(2) of this AD. (1) For airplanes identified in paragraph 1.A. “Effectivity,” sub-paragraph (1) of the service bulletin: Do the first inspection before the next flight after the effective date of this AD, and repeat the inspection thereafter before each flight. (2) For airplanes identified in paragraph 1.A. “Effectivity,” sub-paragraph (2) of the service bulletin: Do the first inspection within 32 flight hours after the effective date of this AD, and repeat the inspection thereafter at intervals not to exceed 32 flight hours. Note 1: For the purposes of this AD, a detailed inspection is: “An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.” No Reporting Requirement (h) Although Fokker AOM AOF50.037 (Ref TS04.57535), dated November 2, 2004, specifies that operators should report cases of oil leakage and send failed O-rings to Fokker Services B.V., this AD does not include that requirement. Special Flight Permit (i) Special flight permits (14 CFR 21.197 and 21.199) are not allowed. Alternative Methods of Compliance (AMOCs) (j)(1) The Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Related Information (k) Dutch airworthiness directive 2004-129, dated November 3, 2004, also addresses the subject of this AD. Material Incorporated by Reference (l) You must use Fokker All Operator Message AOF50.037 (Ref TS04.57535), dated November 2, 2004; and Fokker Service Bulletin SBF50-61-023, dated November 3, 2004; as applicable, to perform the actions that are required by this AD, unless the AD specifies otherwise. (Only page 1 of Fokker All Operator Message AOF50.037 (Ref TS04.57535), contains the issue date of the document; no other page of the document contains this information.) 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. Contact Fokker Services B.V., P.O. Box 231, 2150 AE Nieuw-Vennep, the Netherlands, for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., room PL-401, Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov ; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the 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 September 26, 2005. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05-19829 Filed 10-5-05; 8:45 am] BILLING CODE 4910-13-P

This AD results from reports of oil leakage at the engine feathering pump. We are issuing this AD to prevent oil loss from the feathering pump, which could cause the engine to shut down in flight.