Airworthiness Directive · Amendment 39-17759 · Stabilizers
Slingsby Aviation Ltd. Airplanes
This AD applies to Slingsby Aviation Ltd. Model T67M260 airplanes, all serial numbers, certificated in any category.
We are adopting a new airworthiness directive (AD) for all Slingsby Aviation Ltd. Model T67M260 airplanes. 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 cracked horizontal stabilizer attachment brackets. We are issuing this AD to require actions to address the unsafe condition on these products.
Unless already done, do the actions specified in paragraphs (f)(1) through (f)(4) of this AD:
(1) Within the next 150 hours time-in-service (TIS) after April 1, 2014 (the effective date of this AD) or at the next annual inspection after April 1, 2014 (the effective date of this AD), whichever occurs later, and repetitively thereafter at intervals not to exceed 150 hours TIS, inspect the aluminum horizontal stabilizer attachment brackets for cracks. Do the inspections following the ACTION instructions in Slingsby Advanced Composites Ltd. Service Bulletin S.B. No: 179, Issue 4, dated March 15, 2007.
(2) If any cracks are found during any inspection required in paragraph (f)(1) of this AD, before further flight, replace the cracked bracket with a serviceable part. Do the replacement following the ACTION instructions in Slingsby Advanced Composites Ltd. Service Bulletin S.B. No: 179, Issue 4, dated March 15, 2007. If a serviceable aluminum horizontal stabilizer attachment bracket is used as a replacement part, repetitively inspect as specified in paragraph (f)(1) of this AD.
(3) To terminate the repetitive inspections required in paragraph (f)(1) of this AD, all four aluminum horizontal stabilizer attachment brackets must be replaced with titanium horizontal stabilizer attachment brackets.
(4) After installing titanium horizontal stabilizer attachment brackets, installing aluminum horizontal stabilizer attachment brackets is prohibited.
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.
Aircraft
