AD 2010-05-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A340-541 and -642 | Airworthiness Directives; Airbus Model A340-541 and -642 Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Model A340-541 and -642 Airplanes |
Unsafe Condition
Cracks were found on left and right sides of the rear spar vertical cruciform at Frame 47 during the A340-600 full scale fatigue test. This situation, if not corrected, can affect the aircraft structural integrity.
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Required Actions
This AD mandates a repetitive inspection program using two Non-Destructive Test (NDT) inspection methods (High Frequency Eddy Current and Ultra Sonic) to detect any cracks. The inspections must be conducted within specified compliance times and intervals based on the airplane configuration and weight variant.
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Compliance Time
Initial inspections must be completed within 2,600 total flight cycles or 17,100 total flight hours, whichever occurs first. Repetitive inspections must be conducted at intervals of 1,200 flight cycles or 8,600 flight hours, whichever occurs first.
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Affected Aircraft
Airbus Model A340-541 and -642 airplanes, certificated in any category; all serial numbers, except those on which Airbus Modification 56026 has been accomplished in production, or Airbus Service Bulletin A340-57-5010 has been accomplished in service.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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