AD 93-14-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE Systems (Operations) Limited | ATP | Airworthiness Directives; British Aerospace (Commercial Aircraft), Limited Model ATP Airplanes |
Unsafe Condition
Structural failure of the engine support structure due to failed or cracked aft isolator bracket attachment bolts, part number A102-4E or A102-5E.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace bolts with new or serviceable parts per SB ATP-54-9 or ATP-54-10-35256A. Inspect bolts for position, cracks, or failure; replace all four bolts if any are missing, failed, or cracked. Repeat inspections at intervals not exceeding 150 hours time-in-service and replace bolts every 5,000 total landings.
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Compliance Time
Prior to the accumulation of 5,000 total landings on the bolts or within 1,250 hours time-in-service after the effective date (October 4, 1993), whichever occurs later. For bolts already at or beyond 5,000 landings, comply within 150 hours time-in-service after the effective date or before further flight if issues found.
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Affected Aircraft
British Aerospace (Commercial Aircraft), Limited Model ATP airplanes with aft isolator bracket attachment bolts part number A102-4E or A102-5E, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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