AD 2008-26-02

Recurring final rule
Data completeness: 90%

Airworthiness Directives; General Electric Company (GE) CT7-8A Turboshaft Engines

AD Number
2008-26-02
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2006-24261
FR Citation
73 FR 78175

Applicability

TypeManufacturerModelDetails
aircraft General Electric Company (GE) CT7-8A Turboshaft Airworthiness Directives; General Electric Company (GE) CT7-8A Turboshaft Engines

Unsafe Condition

Failure of the No. 3 bearing due to contamination by aluminum oxide, which could result in a possible in-flight shutdown of the engines and loss of control or forced landing of the aircraft.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Remove from service certain GE CT7-8A turboshaft engines within 6,200 cycles-since-new unless the front frame was flushed and the No. 3 bearing replaced. Prohibit installing any engine that has a serial number listed in Table 1 unless the front frame was flushed and the No. 3 bearing replaced.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within 6,200 cycles-since-new.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

General Electric Company (GE) CT7-8A turboshaft engines with serial numbers listed in Table 1 of the AD.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 4, 2026

Rights: U.S. Government Public Domain

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