airworthiness · Rule · Final rule. · Published 2013-10-28 · Effective 2013-12-02 · 78 FR 64159
Document
Document number
2013-25295
Federal Register citation
78 FR 64159
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus
Publication date
2013-10-28
Effective date
2013-12-02
FAA docket
Docket No. FAA-2013-0539
Abstract
We are superseding airworthiness directive (AD) 2000-12-11, for certain Model A300 B4-600 and Model A300 B4-600R series airplanes. AD 2000-12-11 required repetitive inspections to detect cracks in the bolt holes inboard and outboard of rib 9 on the bottom booms of the front and rear wing spars, and repair if necessary. This new AD reduces the initial inspection compliance time and repetitive inspection interval. This AD was prompted by a fleet survey and an updated fatigue and damage tolerance analysis indicating a high risk for fatigue cracking on the front and rear spar bottom booms. We are issuing this AD to detect and correct fatigue cracks in the bolt holes of the wing spars, which could result in reduced structural integrity of a wing spar.