AD 2021-07-13
Unsafe Condition
cracked buckle handles on certain buckles with a date of manufacture from November 2004 through May 2007, which can lead to a failure to release a strap when the buckle is rotated, particularly when a passenger weighs more than 50 kg (approximately 110 lbs.) and an aircraft is upside down.
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Required Actions
inspect each buckle handle for a crack within 6 months and the buckle handle vane thickness within 12 months, depending on the results, remove the buckle from service and install an airworthy buckle, prohibit installing the affected buckles
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Compliance Time
Within 6 months
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Affected Aircraft
Pacific Scientific Company buckle part numbers (P/Ns) 1111430 and 1111475, all dash numbers, installed on certain airplanes and helicopters
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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