airworthiness · Rule · Final rule. · Published 2017-09-27 · Effective 2017-11-01 · 82 FR 44903
Document
Document number
2017-20567
Federal Register citation
82 FR 44903
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus
Publication date
2017-09-27
Effective date
2017-11-01
FAA docket
Docket No. FAA-2017-0498
Abstract
We are superseding Airworthiness Directive (AD) 2015-15-10, which applied to all Airbus Model A318, A319, A320, and A321 series airplanes. AD 2015-15-10 required repetitive inspections of the trimmable horizontal stabilizer actuator (THSA) for damage, and replacement if necessary; and replacement of the THSA after reaching a certain life limit. This AD requires repetitive detailed inspections of certain THSAs, and related investigative and corrective actions if necessary. This AD was prompted by the establishment of an additional life limit for the THSA, based on flight cycles. In addition, the THSA manufacturer has issued service information which, when accomplished, increases the life limit of the THSA. We are issuing this AD to address the unsafe condition on these products.