AD 67-31-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus SAS | BAC 1-11 400 Series | Airworthiness Directives; BRITISH AIRCRAFT Model BAC 1-11 400 Series Airplanes |
Unsafe Condition
Failure of the flap secondary transmission shaft, Hobson P/N CHA561-067, located between the Number 1 and Number 2 screw jacks, due to frettage deposit around each end and fitting and each fairlead sleeve.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the flap secondary transmission shaft for failure or signs of frettage deposit within 350 landings after the effective date or before 1,500 landings, whichever occurs later. Repeat inspections at intervals not exceeding 70 landings if frettage is found, or 350 landings if not. Replace failed shafts before further flight with new or approved repaired parts. Discontinue inspections after modification per Service Bulletin 27 PM 3034.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 350 landings after the effective date of this AD or before the accumulation of 1,500 landings, whichever occurs later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BRITISH AIRCRAFT Model BAC 1-11 400 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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