AD 58-22-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hamilton Standard | Propeller Blades | HAMILTON STANDARD 6800, 6900, and 7000 Series Externally Surface-Treated Aluminum Alloy Blades (Airfoil Shotpeened and/or Shank Rolled, Including Nickel-Plated Blades) |
Unsafe Condition
Two surface-treated aluminum alloy blades fractured during operation due to blade bending which may have a serious detrimental effect on the fatigue strength of a blade.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and measure face alinement values prior to overhaul and after operations affecting face alinement, following Hamilton Standard Service Bulletin No. 546.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
At first blade overhaul after January 1, 1959, and at every overhaul thereafter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Hamilton Standard 6800, 6900, and 7000 Series Externally Surface-Treated Aluminum Alloy Blades (Airfoil Shotpeened and/or Shank Rolled, Including Nickel-Plated Blades).
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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