AD 67-25-02 R3
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
Serious deterioration and failure of the flap drive screwjacks due to excessive nut-to-screw backlash and unusual wear.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform visual inspections of the flap drive screwjacks for unusual wear per British Aerospace BAC 1-11 Alert Service Bulletin 27-A-PM2992 Issue 4 prior to 750 landings or 800 hours time in service. Measure nut-to-screw backlash per the service bulletin before 3,000 landings or 4,800 hours time in service, and replace the screwjack assembly if backlash exceeds 0.03-inch. Incorporate modification PM2992 with a new seal for the ball nut as terminating action.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required as indicated unless previously accomplished.
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, certificated in all categories.
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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