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Airworthiness directives › 2018-23-02

AD 2018-23-02 Airworthiness Directives; Airbus SAS Airplanes

Superseded. This directive was replaced by AD 2024-24-10. Work to the current one.
2018-12-28
2018-11-23
39-19488
FAA-2018-0298
Airframe
2024-24-10

Models named: A318-111, A318-112, A318-121, A318-122, A319-111, A319-112, A319-113, A319-114, A319-115, A319-131. Read the applicability below — it usually turns on serial or part numbers too.

Applicability*9

This AD applies to Airbus SAS Model A318-111, A318-112, A318-121, and A318-122 airplanes; Model A319-111, A319-112, A319-113, A319-114, A319-115, A319-131, A319-132, and A319-133 airplanes; Model A320-211, A320-212, A320-214, A320-216, A320-231, A320-232, and A320-233 airplanes; and Model A321-111, A321-112, A321-131, A321-211, A321-212, A321-213, A321-231, and A321-232 airplanes; certificated in any category, all manufacturer serial numbers.

Compliance

Comply with this AD within the compliance times specified, unless already done.

Required actions

Before exceeding 20 months since airplane first flight, or since airplane first flight following last THSA replacement, or within 20 months after the last inspection of the lower THSA attachment as specified in the instructions of Airbus Service Bulletin A320-27-1164, Revision 02 up to Revision 09, whichever occurs latest, do the actions specified in paragraphs (g)(1), (g)(2), and (g)(3) of this AD concurrently, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A320-27-1164, Revision 14, dated January 16, 2018. Repeat the actions thereafter at intervals not to exceed 20 months. (1) Check the clearance between the secondary nut trunnions and the junction plates at the lower THSA attachment. (2) Do a general visual inspection of the lower THSA attachment for correct installation of attachment parts. (3) Do a general visual inspection of the THSA ball screw for dents.

Unsafe condition

This AD was prompted by reports of missing assembly hardware on the trimmable horizontal stabilizer actuator (THSA). We are issuing this AD to address uncontrolled movement of the horizontal stabilizer as a result of the latent (undetected) failure of the THSA's primary load path and consequent loss of control of the airplane.

Affected ADs

This AD affects AD 2007-06-02, Amendment 39-14983 (72 FR 12072, March 15, 2007) (“AD 2007-06-02”); and AD 2008-09-16, Amendment 39-15497 (73 FR 24160, May 2, 2008) (“AD 2008-09-16”).

Read the original on the Federal Register →

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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1