AD Amdt-39-11456

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 777-200 and -300 Series Airplanes

AD Number
Amdt-39-11456
Status
final_rule
Effective Date
Product Category
engine
Docket
Docket No. 99-NM-323-AD
FR Citation
64 FR 68618

Applicability

TypeManufacturerModelDetails
aircraft Boeing 777-200 and -300 Airworthiness Directives; Boeing Model 777-200 and -300 Series Airplanes

Unsafe Condition

Reports of inflight shutdowns due to sheared backup generator shafts.

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

Required Actions

Revise the Limitations Section of the Airplane Flight Manual to prohibit dispatch under certain conditions. Conduct repetitive inspections of backup generators for correct operation. Perform a one-time inspection for damage to the engine external gearbox on certain airplanes, with corrective actions as necessary.

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

Compliance Time

Before further flight.

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

Affected Aircraft

All Boeing Model 777-200 and -300 series airplanes.

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

Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

View Official Source ↗ Find More ADs for Boeing 777-200 and -300

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