Airworthiness directives › 2012-07-05
AD 2012-07-05 Airworthiness Directives; Fokker Services B.V. Airplanes
Models named: F.27 Mark 050. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Fokker Services B.V. Model F.27 Mark 050 airplanes; certificated in any category; serial numbers 20103 through 20252 inclusive, 20254 through 20267 inclusive, 20270 through 20279 inclusive, 20281, 20283 through 20286 inclusive, 20288 through 20317 inclusive, 20328, 20331, 20333, and 20335; except those that have already been modified in accordance with Fokker Service Bulletin SBF50-53-062.
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 the applicable times specified in paragraphs (g)(1), (g)(2), or (g)(3) of this AD: Do a low frequency eddy current (LFEC) inspection for cracks of the lap joint of the rear fuselage, in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF50-53-061, dated January 13, 2011. (1) For airplanes that have accumulated 47,000 total flight cycles or more as of the effective date of this AD: Within 3 months after the effective date of this AD. (2) For airplanes that have accumulated more than 46,000 total flight cycles but less than 47,000 total flight cycles as of the effective date of this AD: Within 6 months after the effective date of this AD. (3) For airplanes that have accumulated more than 45,000 total flight cycles but less than or equal to 46,000 total flight cycles as of the effective date of this AD: Within 12 months after the effective date of this AD.
Unsafe condition
This AD was prompted by reports of cracking in the fuselage lap joint. We are issuing this AD to detect and correct exponential crack growth, which could lead to failure of the lap joint over a certain length and consequent in-flight decompression of the airplane.
Affected ADs
None.
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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