AD Amdt-39-10752

final rule
Data completeness: 70%

Airworthiness Directives; CFM International CFM56-3, -3B, and -3C Series Turbofan Engines

AD Number
Amdt-39-10752
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 98-ANE-44-AD
FR Citation
63 FR 48573

Applicability

TypeManufacturerModelDetails
engine CFM International CFM56-3 Airworthiness Directives; CFM International CFM56-3, -3B, and -3C Series Turbofan Engines

Unsafe Condition

AGB starter gearshaft failure can cause inflight engine shutdowns, and on aircraft with two affected engines, possible dual engine shutdown and forced landing.

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

Required Actions

Replace a suspect AGB starter gearshaft with a serviceable gearshaft or remove the affected engine and replace with a serviceable engine. Compliance timelines vary based on aircraft configuration: within 350 hours TIS or by September 1, 1998 for twin-engine installations, and within 2,100 hours TIS or by February 1, 1999 for single-engine installations.

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

Compliance Time

Within 350 hours TIS or by September 1, 1998 for two engines; within 2,100 hours TIS or by February 1, 1999 for one engine

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

Affected Aircraft

CFM International CFM56-3, -3B, and -3C series turbofan engines installed on aircraft

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

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