Airworthiness directives › 2013-08-10
AD 2013-08-10 Airworthiness Directives; Kelowna Flightcraft R & D Ltd. Airplanes
Models named: 340, 440, 640, 5800, 580, C-131B, C-131D, C-131E, C131F/R4Y-1. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Tracor (Convair) Model 340 and 440 airplanes, including airplanes modified by Supplemental Type Certificates (STC) SA1096WE http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/BAB5BE3241FF1FD085256CC10080DDDC?OpenDocument&Highlight=sa1096we (commonly referred to as Model 640 airplanes), STC SA6088NM http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/BEFFE27E85EAFF9186257714007C8B4B?OpenDocument&Highlight=sa6088nm (commonly referred to as Model 5800 airplanes), and STC SA4-1100 http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/AFD81364EE6A3EAC85256CC2000C5CC2?OpenDocument&Highlight=sa4-1100 (commonly referred to as Model 580 airplanes) and Military Model C-131B, C-131D, C-131E, and C131F/R4Y-1 airplanes; certificated in any category.
Compliance
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Required actions
Within 20 flight hours after the effective date of this AD: Do a one-time detailed inspection for cracking of the lower skin of the left-hand (LH) and RH wings around the inboard side of the WS 6 and WS 7 access panel doubler fingers and between stringers 5 and 11, in accordance with the Accomplishment Instructions of Kelowna Flightcraft Service Bulletin 340-57-001, dated February 12, 2013. Repeat the inspection thereafter at intervals not to exceed 1,000 flight hours.
Unsafe condition
This AD was prompted by a report of a crack found on the lower skin of the right-hand (RH) wing between wing station (WS) 5 and 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.
Affected ADs
None.
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