Airworthiness Directive · Amendment 39-18537 · Fuselage
BLANIK LIMITED Gliders
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.
We are superseding airworthiness directive (AD) 2000-20-11 for BLANIK LIMITED Models L-13 Blanik and L-13 AC Blanik gliders (type certificate previously held by LET Aeronautical Works). 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 insufficient material strength of the tail-fuselage attachment fitting. We are issuing this AD to require actions to address the unsafe condition on these products.
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 60 days after November 27, 2000 (the effective date retained from AD 2000-20-11), inspect the tail-fuselage attachment fitting, part number (P/N) A 102 021 N, for damage and material hardness following the procedures in LET Mandatory Bulletin No.: L13/085a, dated November 17, 1999.
(ii) If you find the tail-fuselage attachment fitting is damaged or the material does not meet the hardness requirements specified in the service bulletin during the inspection required in paragraph (f)(1)(i) of this AD, before further flight, you must contact the manufacturer to obtain an FAA-approved replacement part for P/N A 102 021 N and FAA-approved installation instructions and install the replacement part. Use the contact information found in paragraph (i)(4) to contact the manufacturer.
(iii) As of November 27, 2000 (the effective date retained from AD 2000-20-11), do not install, on any glider, a P/N A 102 021 N attachment fitting that has not passed the inspection required in paragraph (f)(1)(i) of this AD.
(2) Model L-13 AC Blanik gliders:
(i) Within the next 60 days after July 8, 2016 (the effective date of this AD), inspect the tail-fuselage attachment fitting, P/N A 102 021 N, for damage and material hardness following the procedures in LET Mandatory Bulletin No.: L13/085a, dated November 17, 1999.
(ii) If you find the tail-fuselage attachment fitting is damaged or the material does not meet the hardness requirements specified in the service bulletin during the inspection required in paragraph (f)(2)(i) of this AD, before further flight, you must contact the manufacturer to obtain an FAA-approved replacement part for P/N A 102 021 N and FAA-approved installation instructions and install the replacement part. Use the contact information found in paragraph (i)(4) to contact the manufacturer.
(iii) As of July 8, 2016 (the effective date of this AD), do not install, on any glider, a P/N A 102 021N attachment fitting that has not passed the inspection required in paragraph (f)(2)(i) of this AD.
