AD 58-08-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hamilton Standard Division | 232 | HAMILTON STANDARD Models 23260, 24260, 34D50, 34D51, 34E60, 43E60, and 43H60 Propellers |
| aircraft | Hamilton Standard Division | 242 | HAMILTON STANDARD Models 23260, 24260, 34D50, 34D51, 34E60, 43E60, and 43H60 Propellers |
| aircraft | Hamilton Standard Division | 34D | HAMILTON STANDARD Models 23260, 24260, 34D50, 34D51, 34E60, 43E60, and 43H60 Propellers |
| aircraft | Hamilton Standard Division | 34E | HAMILTON STANDARD Models 23260, 24260, 34D50, 34D51, 34E60, 43E60, and 43H60 Propellers |
| aircraft | Hamilton Standard Division | 43E | HAMILTON STANDARD Models 23260, 24260, 34D50, 34D51, 34E60, 43E60, and 43H60 Propellers |
| aircraft | Hamilton Standard Division | 43H | HAMILTON STANDARD Models 23260, 24260, 34D50, 34D51, 34E60, 43E60, and 43H60 Propellers |
Unsafe Condition
The dome cap of propellers incorporating a pitch lock can become partially disengaged in flight, resulting in complete loss of propeller control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect, rework, and/or replace components to reduce the clearance between the dome cap and stop lever sleeve bushing to 0.013 or less.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
at first propeller overhaul after May 15, 1958, if not already accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Hamilton Standard Division Models 23260, 24260, 34D50, 34D51, 34E60, 43E60, and 43H60 Propellers incorporating pitch locks
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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