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FAA
Federal Aviation Administration Department of Transportation
Aviation Safety
AIRWORTHINESS DIRECTIVE
Generated by Aircraft-logs.com — March 22, 2026

AD T91-11-51 SUPERSEDED

Loss of control of the propeller system
WARNING: This AD has been superseded and is no longer active. Replaced by: 93-06-06. Refer to the superseding AD(s) for current requirements.
Key Information
AD Number T91-11-51 Status Superseded
Effective Date Not specified Issue Date Not specified
Docket Number Unknown Amendment N/A
Product Type ["Propeller"] Product Subtype Not specified
CFR Part --- - Part 39 CFR Section N/A
Applicability
Manufacturer(s) Hamilton Standard Division Hamilton Sundstrand
Model(s) 6/5500/F-1 14RF-19 14RF-21 14RF-9 14SF- 5 14SF- 7 14SF-11 14SF-15
Related Airworthiness Directives
Superseded By 93-06-06
AD T91-11-51 — Loss of control of the propeller system
Printed from Aircraft-logs.com — 03/22/2026