AD 78-12-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus SAS | BAC 1-11 400 Series | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11 400 Series Airplanes |
Unsafe Condition
Cracks in the nose landing gear sustaining ram P/N AK44 A103 or AK44 A853 could exceed 2-1/2 inches in length around the circumference, leading to structural failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect nose landing gear sustaining rams using permanent magnet and detection ink per BAC Alert Service Bulletin No. 32-A-PM3509, issue 5. Replace rams with P/N AK44 A987 or same part number if cracks exceed 2-1/2 inches; blend out smaller cracks within limits, then shot peen and reprotect. Continue inspections at intervals not exceeding 1000 landings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to accumulating 4500 landings on the ram or within 500 landings after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 1000 landings from the last inspection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BRITISH AIRCRAFT CORPORATION Model BAC 1-11 400 Series Airplanes with nose landing gear sustaining ram P/N AK44 A103 or AK44 A853 installed.
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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