AD 2016-19-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company | Airworthiness Directives; General Electric Company Turbofan Engines |
Unsafe Condition
Reports of cracks found on the seal teeth of the HPC stage 8-10 spool, which could lead to failure of the HPC stage 8-10 spool, uncontained rotor release, damage to the engine, and damage to the airplane.
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Required Actions
Perform eddy current inspections (ECIs) or fluorescent penetrant inspections (FPIs) of the HPC stage 8-10 spool seal teeth according to specified compliance times. Remove from service any HPC stage 8-10 spool that fails inspection and replace with a part eligible for installation. Guidance is provided in GE Service Bulletins SB 72-1141 R00 and SB 72-1142 R00.
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Compliance Time
Within specified compliance times based on cycles since new (CSN) as detailed in the AD.
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Affected Aircraft
General Electric Company GE90-76B, GE90-77B, GE90-85B, GE90-90B, and GE90-94B turbofan engines with HPC stage 8-10 spool, part numbers 1694M80G04, 1844M90G01, or 1844M90G02, installed.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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