AD 97-18-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Puritan-Bennett Aero Systems | Cone and Seal Assemblies | Airworthiness Directives; Puritan-Bennett Aero Systems Co., Cone and Seal Assemblies, part numbers 210543 and 210543-01 |
Unsafe Condition
Failure of the ultrasonic weld on the cone and seal assembly of the oxygen mask could result in reduced oxygen flow through the mask, which could prevent the crew from obtaining oxygen in an emergency situation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace any cone and seal assembly (part numbers 210543 and 210543-01) manufactured or repaired from August 1996 through July 1997 with an FAA-approved assembly. No person may equip an aircraft with these assemblies during or after the effective date of this AD.
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Compliance Time
Required within the next 7 days after the effective date of this AD, unless already accomplished.
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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. These may be attached to specific Puritan-Bennett sweep-on crew oxygen masks listed in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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