AD Amdt-39-9170

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Hamilton Standard 14RF Series, 14SF Series, and Hamilton Standard/British Aerospace Model 6/5500/F Propellers

AD Number
Amdt-39-9170
Status
final_rule
Effective Date
Product Category
propeller
Docket
Docket No. 95-ANE-02
FR Citation
60 FR 12663

Unsafe Condition

Cracks initiating in the blade taper bore can lead to loss of a propeller blade in flight.

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

Required Actions

Perform initial and repetitive ultrasonic shear wave inspections for cracks in the propeller blade taper bore. Conduct a one-time visual and borescope inspection for corrosion in the taper bore as a terminating action.

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

Hamilton Standard 14RF series, 14SF series, and Hamilton Standard/British Aerospace Model 6/5500/F propellers

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 ↗