Airworthiness Directives; Kelowna Flightcraft R & D Ltd. Airplanes
airworthiness · Rule · Final rule; request for comments. · Published 2013-04-25 · Effective 2013-05-10 · 78 FR 24340
Document
Document number
2013-08987
Federal Register citation
78 FR 24340
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Kelowna Flightcraft R & D Ltd.
Publication date
2013-04-25
Effective date
2013-05-10
FAA docket
Docket No. FAA-2013-0330
Abstract
We are adopting a new airworthiness directive (AD) for certain Tracor (Convair) Model 340 and 440 airplanes and certain Military Model C-131B, C-131D, C-131E, and C131F/R4Y-1 airplanes. This AD requires repetitive inspections of the lower skin of the wings for cracking around the inboard side of the wing station (WS) 6 and 7 access panel doubler fingers and between stringers 5 and 11; repetitive inspections of the lower skin of the wings for cracking around stringers 6, 8, and 10, and around the WS 6 and WS 7 access panel doubler fingers; and repair if necessary. This AD was prompted by a report of a crack found on the lower skin of the right-hand wing between WS 5 and WS 6. We are issuing this AD to detect and correct fatigue cracking of the lower skin of the wings, which could result in reduced structural integrity of the wings.