AD Amdt-39-9696

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Sikorsky Aircraft Model S-76B Helicopters

AD Number
Amdt-39-9696
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 96-SW-16-AD
FR Citation
61 FR 37675

Applicability

TypeManufacturerModelDetails
aircraft Sikorsky Aircraft Model S-76B Airworthiness Directives; Sikorsky Aircraft Model S-76B Helicopters

Unsafe Condition

Fatigue crack in the drive shaft caused by fretting of a balance weight rivet washer.

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

Required Actions

Inspect the drive shaft for cracks or loose balance weights. Replace the drive shaft if cracks or loose balance weights are found.

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

Sikorsky Aircraft Model S-76B helicopters with certain engine drive shaft assemblies installed.

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.

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