AD Amdt-39-10113
Unsafe Condition
Cone and seal assemblies, part numbers 210543 and 210543-01, manufactured or repaired from August 1996 through July 1997, may have faulty ultrasonic welds leading to reduced oxygen flow through the mask.
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Required Actions
Replace all cone and seal assemblies manufactured or repaired between August 1996 and July 1997.
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Compliance Time
Before further flight
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Affected Aircraft
Puritan-Bennett Aero Systems Co. cone and seal assemblies, part numbers 210543 and 210543-01, manufactured or repaired from August 1996 through July 1997.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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