AD 97-11-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Puritan-Bennett Aero Systems | Oxygen Masks | Airworthiness Directives; Puritan Bennett Aero Systems Company Series 174290 Constant Flow Airline Portable Oxygen Masks, Part Numbers 174290-14, 174290-24, 174290-34, 174290-44, and 174290-54. |
Unsafe Condition
The connector of the Series 174290 Constant Flow Airline Portable Oxygen Masks has an orifice that could restrict oxygen flow to less than half the required amount (1.7 liters per minute) when connected to the Puritan Bennett Model 176960 airline portable oxygen cylinder assembly.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace any affected masks with an FAA-approved mask that has a part number not covered by this AD. The replacement must be completed within 7 days after the AD's effective date.
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Compliance Time
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 Company Series 174290 Constant Flow Airline Portable Oxygen Masks, Part Numbers 174290-14, 174290-24, 174290-34, 174290-44, and 174290-54, manufactured between September 1992 and August 1996.
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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