AD 2013-12-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Engine | Alliance Turbofan | Airworthiness Directives; Engine Alliance Turbofan Engines |
Unsafe Condition
Damage to the high-pressure compressor (HPC) stage 7-9 spool caused by failure of the baffle plate feature on affected HPC stage 6 disks.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Initial and repetitive borescope inspections of the baffle plate feature on HPC stage 6 disks. Remove the HPC stage 6 disk if the baffle plate feature is cracked or missing material. Mandatory removal of affected HPC stage 6 disks at the next HPC module exposure, but not to exceed 6,800 cycles-since-new.
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Compliance Time
Within specified compliance times, unless already done.
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Affected Aircraft
Engine Alliance GP7270 and GP7277 turbofan engines with a high-pressure compressor (HPC) stage 6 disk, part number (P/N) 382-100-505-0, installed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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