AD 2024-06-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company | Airworthiness Directives; General Electric Company Engines, and Various Restricted Category Rotorcraft |
Unsafe Condition
Inadequate braze coverage of the torque reference tube magnetic insert braze joint of the PT drive shaft assembly, which could result in improper torque and engine speed indications, creating an unacceptably high flight crew workload in maintaining control of the aircraft, and result in consequent loss of control of the aircraft.
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Required Actions
A phase array ultrasonic inspection of the torque reference tube magnetic insert braze joint of the PT drive shaft assembly for inadequate braze coverage, and repair or replacement of the PT drive shaft assembly if necessary, in accordance with the service information specified in this AD.
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Compliance Time
Within 50 flight hours
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Affected Aircraft
General Electric Company (GE) Model CT7-2E1, CT7-2F1, CT7-8A, CT7-8E, and CT7-8F5 engines, and various restricted category helicopters with GE Model T700-GE-700, -701A, -701C, -701D/CC, -701D, -401, -401C, CT7-2D, or CT7-2D1 engines installed.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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