airworthiness · Rule · Final rule; request for comments. · Published 2012-03-30 · Effective 2012-04-16 · 77 FR 19059
Document
Document number
2012-7374
Federal Register citation
77 FR 19059
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Airbus
Publication date
2012-03-30
Effective date
2012-04-16
FAA docket
Docket No. FAA-2012-0297
Abstract
We are adopting a new airworthiness directive (AD) for all Airbus Model A340-500 and Model -600 series airplanes. This AD requires performing repetitive high frequency eddy current inspections of the external radius on upper horizontal cruciform fitting at frame (FR) 47 on the left- and right-hand sides for cracks, and repairing the cracks if necessary. This AD was prompted by reports that during fatigue testing, damages occurred in the external radius on the upper horizontal cruciform fitting at FR47 on the left- and right-hand sides. We are issuing this AD to detect and correct fatigue cracking, which could adversely affect the structural integrity of the airplane.