AD 2010-06-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company CF6-45 and CF6-50 Series | Airworthiness Directives; General Electric Company CF6-45 and CF6-50 Series Turbofan Engines |
Unsafe Condition
Cracking of low-pressure turbine (LPT) stage 3 disks, potentially leading to uncontained engine failure and damage to the airplane.
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Required Actions
Fluorescent penetrant inspection (FPI) of LPT stage 3 disks; removal of cracked disks from service before further flight; initial and repetitive borescope inspections of HPT rotor stage 1 and stage 2 blades for wear and damage, including excessive airfoil material loss.
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Compliance Time
Within 50 cycles-in-service (CIS) after the effective date for initial borescope inspection; thereafter, within every 175 CIS for repetitive inspections.
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Affected Aircraft
General Electric Company CF6-45A, CF6-45A2, CF6-50A, CF6-50C, CF6-50CA, CF6-50C1, CF6-50C2, CF6-50C2B, CF6-50C2D, CF6-50C2F, CF6-50C2R, CF6-50E, CF6-50E1, and CF6-50E2 series turbofan engines with specified LPT stage 3 disks installed.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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