AD 81-17-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus SAS | BAC 1-11 200 Series | Airworthiness Directives; BRITISH AEROSPACE Model BAC 1-11 200 and 400 series Airplanes |
| aircraft | Airbus SAS | BAC 1-11 400 Series | Airworthiness Directives; BRITISH AEROSPACE Model BAC 1-11 200 and 400 series Airplanes |
Unsafe Condition
Failure of the oxygen system ground charging system could result in fire during recharging due to potential leakage or improper operation of components such as the non-return valve (P/N WKA 30035 or WKA 30035/1) or shut-off valves (Normalair P/N OP 6370 or Adams P/N 6D/2313 MK 10 A).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a placard near the oxygen filler valve within 10 hours time in service; replace non-return valve with P/N WKA 30035/1 modified to WKA 37395 configuration within 50 hours; accomplish modifications PM 5291 and PM 5413 (if applicable) by October 1, 1981; inspect shut-off valves every 2400 hours or 1 year; replace unserviceable valves before further flight. Alternatively, deactivate the ground charging system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required as indicated unless already accomplished (specific deadlines include 10, 50 hours time in service after effective date, prior to October 1, 1981, and inspections within 300 hours or 60 days with recurring intervals).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
British Aerospace Model BAC 1-11 200 and 400 series airplanes with a ground charging system as part of the oxygen system.
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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