Airworthiness Directive · Amendment 39-16313 · Fuel
Stemme GmbH & Co. KG Model S10-VT Powered Sailplanes
This AD applies to Model S10-VT powered sailplanes, serial numbers 11-001 through 11-112, certificated in any category.
We are superseding an existing airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions:
(1) For all sailplanes affected by this AD, except for serial numbers 11-036, 11-067, 11-068, and 11-090: Before further flight after March 21, 2008 (the compliance date retained from AD 2008-03-06, which was superseded by AD 2008-11-20), replace all plastic T- and Y-connectors in the fuel system with metal connectors. Do the replacements following STEMME F & D Service Bulletin A31-10-082, AM.-Index: 01.a, dated November 30, 2007, or STEMME F & D Service Bulletin A31-10-083, Am-Index: 01.b, dated May 6, 2009.
Note 1: Serial numbers 11-036, 11-067, 11-068, and 11-090 had the plastic T- and Y-connectors in the fuel system replaced with metal connectors by the manufacturer.
(2) For all sailplanes affected by this AD: Before further flight after June 23, 2008 (the compliance date retained from AD 2008-11-20), inspect the fuel system for possible leakage. Do the inspection following STEMME F & D Service Bulletin A31-10-083, Am-Index: 01.a, dated February 26, 2008, or STEMME F & D Service Bulletin A31-10-083, Am-Index: 01.b, dated May 6, 2009.
(3) For all sailplanes affected by this AD: If any leak is found during the inspection required in paragraph (f)(2) of this AD, before further flight, repair the leak following an FAA-approved procedure and replace all STEMME part number (P/N) M476 single-ear clamps in the fuel system with P/N 10M-181 single-ear clamps. Contact the manufacturer at the address specified in paragraph (i)(4) of this AD to obtain an FAA-approved repair procedure. Do the replacements following STEMME F & D Service Bulletin A31-10-083, Am-Index: 01.a, dated February 26, 2008, or STEMME F & D Service Bulletin A31-10-083, Am-Index: 01.b, dated May 6, 2009.
(4) For sailplanes that had P/Ns M476 replaced with P/Ns 10M-181 in compliance with AD 2008-11-20: Before further flight after July 6, 2010 (the effective date of this AD), do a leak test as specified in STEMME F & D Service Bulletin A31-10-083, Am-Index: 01.a, dated February 26, 2008, or STEMME F & D Service Bulletin A31-10-083, Am-Index: 01.b, dated May 6, 2009.
(5) For sailplanes that had P/Ns M476 replaced with P/Ns 10M-181 in compliance with AD 2008-11-20: If a leak is found during the leak test required in paragraph (f)(4) of this AD, before further flight, repair the leak following an FAA-approved procedure. Contact the manufacturer at the address specified in paragraph (i)(4) of this AD to obtain an FAA-approved repair procedure.
(6) For all sailplanes affected by this AD: If no leak is found during the inspection required in paragraph (f)(2) of this AD, within the next 12 months after July 6, 2010 (the effective date of this AD), replace all P/Ns M476 in the fuel system with P/Ns 10M-181. Do the replacements following STEMME F & D Service Bulletin A31-10-083, Am-Index: 01.a, dated February 26, 2008, or STEMME F & D Service Bulletin A31-10-083, Am-Index: 01.b, dated May 6, 2009.
(7) For all sailplanes affected by this AD: Before further flight after doing the replacement required in paragraph (f)(6) of this AD, do a leak test as specified in STEMME F & D Service Bulletin A31-10-083, Am-Index: 01.a, dated February 26, 2008, or STEMME F & D Service Bulletin A31-10-083, Am-Index: 01.b, dated May 6, 2009.
(8) For all sailplanes affected by this AD: If a leak is found during the leak test required in paragraph (f)(7) of this AD, before further flight, repair the leak following an FAA-approved procedure. Contact the manufacturer at the address specified in paragraph (i)(4) of this AD to obtain an FAA-approved repair procedure.
(9) For all sailplanes affected by this AD: After June 23, 2008 (the compliance date retained from AD 2008-11-20), do not install plastic “T” and “Y” shape connectors and P/N M476 single-ear clamps in the fuel system.
Note 2: This AD differs from the MCAI and/or service information as follows: No differences.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
