Airworthiness Directive · Amendment 39-14835 · Stemme GmbH & Co. AG Model STEMME S10-VT Sailplanes
Stemme GmbH & Co. AG Model STEMME S10-VT Sailplanes
This AD applies to STEMME Model S10-VT sailplanes; certificated in any U.S. category:
(1) Serial numbers (S/Ns) 11-89 through 11-096; and
(2) All S/Ns where pressure lines were replaced between July 27, 2004, and June 22, 2005, inclusive, and the parts were provided by Stemme Gmbh & Co. AG (Stemme).
We are adopting a new 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 ripped pressure lines between Airbox-Carburetor-Differential fuel pressure sensor. We are issuing this AD to require actions that are intended to address the unsafe condition described in the MCAI.
Unless already done, do the following actions.
(1) Within 30 days after the effective date of this AD, inspect all 0.15 - 0.27 inch (4 x 7mm) pressure lines for porousness or cracks in particular areas of T-splits parts, clamps, or connections. The free areas between the white plastic covers must also be checked. If cracks or porosity are found, before further flight, replace all pressure lines with ROTAX part number (P/N) 860 660 or Stemme P/N HZ-KLS041 (or FAA-approved equivalent P/Ns) pressure lines following STEMME F&D Design Org. Service Bulletin A31-10-73, Am. Index 01.a, dated June 22, 2005.
Within 60 days after the effective date of this AD, unless already done, replace all installed 0.15 x 0.27 inch (4 x 7 mm) pressure lines with ROTAX P/N 860 660 or Stemme P/N HZ-KLS041 (or FAA-approved equivalent P/Ns) pressure lines following STEMME F&D Design Org. Service Bulletin A31-10-073, Am. Index 01.a, dated June 22, 2005.
Note: 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.
