2009-22-07 Saab AB, Saab Aerosystems: Amendment 39-16058. Docket No. FAA-2009-0654; Directorate Identifier 2008-NM-083-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective December 3, 2009.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Saab AB, Saab Aerosystems Model SAAB 2000 airplanes, certificated in any category, serial numbers 004 through 063 inclusive.
Subject
(d) Air Transport Association (ATA) of America Code 79: Engine oil.
Reason
(e) The mandatory continuing airworthiness information (MCAI) states:
There have been reported incidents of brinelling to the self- sealing coupling Part Number (P/N) 9304000-303 (Nipple Assembly). The wear is visible in the groove of the nipple, caused by the socket locking balls. During tear down investigations of self- sealing coupling P/N 9304000-305 (Socket Assembly), internal socket wear has been observed. Wear that exceeds the allowable limits could lead toreduced oil flow, and further wear could contribute to separation of the Self-Seal Coupling, making the engine inoperable and subsequent shut down. As secondary damage, the generator may fail, releasing oil into the nacelle and increasing the possibility of fire.
For the reason described above, this Airworthiness Directive (AD) requires the inspection of the affected nipple- and socket assemblies and, if wear is found outside the specified limits, replacement of worn parts.
Actions and Compliance
(f) Unless already done, do the following actions.
(1) Within 12 months after the effective date of this AD: Inspect the affected nipple assembly part number (P/N) 9304000-303 and socket assembly P/N 9304000-305 for signs of damage, wear, and leaking of the nipple and socket, in accordance with the Accomplishment Instructions of Saab Service Bulletin 2000-79-006, Revision 01, dated October 15, 2007. Repeat the inspection thereafter at intervals not to exceed 4,000 flight hours.
(2) If any wear is found during any inspection required by paragraph (f)(1) of this AD that is beyond the limits specified in Saab Service Bulletin 2000-79-006, Revision 01, dated October 15, 2007, prior to further flight, replace the part with a new or serviceable unit having the same part number, in accordance with Saab Service Bulletin 2000-79-006, Revision 01, dated October 15, 2007.
(3) If any leak or damage is found during any inspection required by paragraph (f)(1) of this AD, prior to further flight, replace the part with a new or serviceable unit having the same part number in accordance with step 2.C.(1)(a)6 or step 2.C.(1)(a)10, as applicable, of Saab Service Bulletin 2000-79-006, Revision 01, dated October 15, 2007.
(4) Replacement of parts does not constitute terminating action for the inspection requirements of this AD.
FAA AD Differences
Note 1: This AD differs from the MCAI and/or service information as follows: No differences.
Other FAA AD Provisions
(g) The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, International Branch, ANM-116, Transport Airplane Directorate, 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: Shahram Daneshmandi, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 227-1112; 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.
(2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approvedif they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service.
(3) Reporting Requirements: For any reporting requirement in this AD, 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 and has assigned OMB Control Number 2120-0056.
Related Information
(h) Refer to MCAI European Aviation Safety Agency Airworthiness Directive 2008-0030, dated February 15, 2008; and Saab Service Bulletin 2000-79-006, Revision 01, dated October 15, 2007; for related information.
Material Incorporated by Reference
(i) You must use Saab Service Bulletin 2000-79-006, Revision 01, dated October 15, 2007, to do the actions required by this AD, unless the AD specifies otherwise.
(1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) For service information identified in this AD, contact Saab Aircraft AB, SAAB Aerosystems, SE-581 88, Link[ouml]ping, Sweden; telephone +46 13 18 5591; fax +46 13 18 4874; e-mail
[email protected]; Internet http:// www.saabgroup.com.
(3) You may review copies of the 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.
(4) 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.
