Airworthiness directives › 2019-04-01
AD 2019-04-01 Airworthiness Directives; HPH s. r.o. Gliders
Applicability*9
This AD applies to HPH s. r.o. Models Glasfügel 304C, Glasfügel 304CZ, and Glasfügel 304CZ-17 gliders, all serial numbers, certificated in any category, with a center of gravity (C.G.) tow release installed.
Compliance
Unless already done, do the following actions before the next winch launch after April 23, 2019 (the effective date of this AD): (1) Measure the distance between and parallelism of the deflector angles on the C.G. tow release by following paragraph 1 in the Action section of HPH spol.s r.o. Service bulletin No. G304 CZ—10 a), G304 CZ-17—10 a), G304 C—10 a), dated August 28, 2018 (co-published as one document). (2) If the distance between the deflector angles is less than 36 mm, before the next winch launch, correct the distance by following paragraph 2 in the Action section of HPH spol.s r.o. Service bulletin No. G304 CZ—10 a), G304 CZ-17—10 a), G304 C—10 a), dated August 28, 2018 (co-published as one document).
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, Policy and Innovation Division, 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 instead 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) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as jamming between the double two-ring end of the towing cable and the deflector angles of >the C.G. release mechanism. We are issuing this AD to prevent failure of the towing cable to disconnect, which could result in reduced or loss of control of the glider or the cable breaking and causing injury to people on the ground.
Affected ADs
None.
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