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Airworthiness directives › 2016-11-13

AD 2016-11-13 Airworthiness Directives; BLANIK LIMITED Gliders

2016-07-14
2016-06-09
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Airframe
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Applicability*9

This AD applies to BLANIK LIMITED Models L-13 Blanik and L-13 AC Blanik gliders (type certificate previously held by LET Aeronautical Works), all serial numbers, certificated in any category.

Compliance

Unless already done, do the following actions in paragraphs (f)(1) and (f)(2) of this AD, including all subparagraphs: (1) Model L-13 Blanik gliders: (i) Within the next 3 calendar months after November 8, 1999 (the effective date retained from AD 99-19-33), paint the elevator drive mechanism using a contrasting color (such as red) following the procedures in LET Mandatory Bulletin MB No.: L13/082a, dated December 10, 1998. (ii) As of November 8, 1999 (the effective date retained from AD 99-19-33), only install an elevator bellcrank that has been painted as specified in paragraph (f)(1)(i) of this AD and that has been properly oriented to make sure it is not being installed backward. (2) Model L-13 AC Blanik gliders: (i) Within the next 3 calendar months after July 14, 2016 (the effective date of this AD), paint the elevator drive mechanism using a contrasting color (such as red) following the procedures in LET Mandatory Bulletin MB No.: L13/082a, dated December 10, 1998. (ii) As of July 14, 2016 (the effective date of this AD), only install an elevator bellcrank that has been painted as specified in paragraph (f)(2)(i) of this AD and that has been properly oriented to make sure it is not being installed backward.

Required actions

The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Standards Office, 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 Directorate, 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 airplane 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) 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-approved if 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.

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 lack of distinct color marking of the elevator drive. We are issuing this AD to prevent inadvertent backward installation of the elevator drive, which could cause significant elevator deflection changes and lead to loss of control.

Affected ADs

This AD supersedes AD 99-19-33, Amendment 39-11320 (64 FR 50440; September 17, 1999) (“AD 99-19-33”).

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