Airworthiness directives › 2017-25-07
AD 2017-25-07 Airworthiness Directives; Alexander Schleicher GmbH & Co. Segelflugzeugbau Gliders
Applicability*9
This AD applies to Alexander Schleicher GmbH & Co. Segelflugzeugbau Models ASH 25M and ASH 26E gliders, all serial numbers, that: (1) Have an exhaust silencer, part number (P/N) 800.65.0001, installed; and (2) are certificated in any category.
Compliance
Unless already done, do the following actions: (1) Before exceeding 150 hours time-in-service (TIS) on the exhaust silencer, P/N 800.65.0001, since new, or within the next 5 hours TIS after January 18, 2018 (the effective date of this AD), whichever occurs later, replace P/N 800.65.0001 with an improved exhaust silencer, P/N 800.65.9010. Do the replacement as specified in Alexander Schleicher GmbH & Co. Segelflugzeugbau ASK 21 Mi Technical Note No. 11, ASW 22 BLE 50 R Technical Note No. 16, ASH 25 M/Mi Technical Note No. 32, ASH 26 E Technical Note No. 19 (single document), dated January 8, 2016. (2) As of January 18, 2018 (the effective date of this AD), do not install a P/N 800.65.0001 exhaust silencer.
Required actions
The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Small Airplane Standards Branch, 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: Jim Rutherford, Aerospace Engineer, FAA, Small Airplane Standards Branch, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4165; fax: (816) 329-4090; email: jim.rutherford@faa.gov. Before using any approved AMOC on any glider to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. (2) Contacting the Manufacturer: For any requirement in this AD to obtain corrective actions from a manufacturer, the action must be accomplished using a method approved by the Manager, Small Airplane Standards Branch, FAA; or the European Aviation Safety Agency (EASA).
Unsafe condition
This AD was prompted by mandatory continuing airworthiness information (MCAI) originated 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 fatigue cracks found on the exhaust silencer. We are issuing this AD to prevent heat damage in the engine compartment and to the engine installation, which could result in reduced control.
Affected ADs
None.
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