Airworthiness directives › 2025-05-15
AD 2025-05-15 Airworthiness Directives; General Electric Company Engines
Models named: CT7-2E1. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to General Electric Company (GE) Model CT7-2E1 engines.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 30 days after the effective date of this AD, revise the airworthiness limitations section of the existing engine maintenance manual or instructions for continued airworthiness, and the operator's existing approved maintenance program or inspection program, as applicable, by replacing the 6,100 cycle life limit with the new life limit of 3,100 cycles for the stage 2 aft turbine cooling plate part number 5166T27P01.
Unsafe condition
This AD was prompted by a revised analysis using an updated stress model, which calculated that the actual life limit of the CT7-2E1 stage 2 turbine aft cooling plate is less than the current life limit. The FAA is issuing this AD to prevent failure of the stage 2 aft turbine cooling plate. The unsafe condition, if not addressed, could result in an uncontained failure, release of high-energy debris, damage to the engine, damage to the airplane, and loss of the airplane.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1