AD 67-22-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus SAS | BAC 1-11 200 Series | Airworthiness Directives; BRITISH AIRCRAFT Models BAC 1-11 203/AE, 204/AF, 212/AR, 401/AK, and 410/AQ Series Airplanes |
| aircraft | Airbus SAS | BAC 1-11 400 Series | Airworthiness Directives; BRITISH AIRCRAFT Models BAC 1-11 203/AE, 204/AF, 212/AR, 401/AK, and 410/AQ Series Airplanes |
Unsafe Condition
Unserviceable drop-out oxygen mask face pieces due to deterioration.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually examine oxygen mask face pieces (Part Nos. WK 28420, WK 28171, WK 31342) for deterioration within 600 hours' time in service after the effective date, and every 1,200 hours thereafter. Replace deteriorated face pieces with serviceable ones or modified parts (WK 33298, WK 33299, WK 33300) before further flight. Discontinue inspections after modification per BAC Service Bulletin.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 600 hours' time in service after the effective date of this AD, unless already accomplished within the last 600 hours' time in service, and thereafter at intervals not to exceed 1,200 hours' time in service from the last inspection
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BRITISH AIRCRAFT Models BAC 1-11 203/AE, 204/AF, 212/AR, 401/AK, and 410/AQ Series Airplanes
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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