Soaring Society of America › Forums › Advocacy › Blanik L-23 ADs
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AD Issued on Blanik L-23 – Horiz Stab Hinge
This AD applies to all Blanik L-23 gliders, certified in any category. This airworthiness directive (AD) becomes effective February 14, 2011.
Before further flight after the effective date of this AD, inspect the rear horizontal stabilizer bracket critical areas (hinge welding areas) for cracks following LET Aircraft Industries Mandatory Bulletin No.: L23/053a, dated December 14, 2010.
(2) If during the inspection required in paragraph (f)(1) of this AD a crack is found, before further flight, replace the bracket following LET Aircraft Industries Information Bulletin No.: L23/054b, dated December 20, 2010.
(3) Within 10 days after the replacement required in paragraph (f)(2) of this AD, do the following actions:
(i) Send the damaged bracket to the address listed in paragraph (i)(2) of this AD.
(ii) Send a report to the address listed in paragraph (i)(2) of this AD containing the following information: Registration mark, serial number, total hours time-in-service, and number of take-offs if available) since the sailplane has been in operation.
The full text of the AD may be found at this link.
The MB L23/053a referenced in the AD is available here.
C. Brickner, Governmental Liaison Comm.
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Dear Stephen,
I’d appreciate your assistance in getting the word out on a global AMOC to AD 2010-15-05, paragraph (f)(2), on the Aircraft Industries a.s. Model L 23 Super Blanik gliders. The AMOC allows the use of an alternate inspection method (eddy current) for the repetitive inspections called for in paragraph (f)(2). The requester, Ms. Laurie Marshall, has given her permission for this letter to be posted online for the benefit of all operators. It’s already been posted to the http://www.regulations.gov website. I appreciate your help to get this information out to the L 23 glider community through the normal SSA channels.
Thanks and Best Regards,
Jim Rutherford
Aerospace Engineer
Federal Aviation Administration
901 Locust Room 301, ACE-112
Kansas City, MO 64106
Office: 816-329-4165
Email: jim.rutherford@faa.gov
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FAA issues Blanik L-23 AD
The FAA is adopting a new airworthiness directive (AD) for all Blanik Aircraft CZ
s.r.o. Model L 23 Super-Blanik gliders. This AD requires a one-time inspection of the rudder control cable attachment screws and hinge bolts, replacement of the cable attachment screws and hinge bolts if a crack is found, and reporting the inspection results to the manufacturer. This AD was prompted by reports of cracked rudder cable attachment screws. The FAA is issuing this AD to address the unsafe condition on these products.The effective date of the AD is August 28, 2020.
A copy of the AD is available here.
Or you can access it online here: https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgad.nsf/0/844ae70112b71b29862585c30041b06e/$FILE/2020-16-05.pdf
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