54-10-01: Servo Piston Shaft
FAA order 54-10-01 is an airworthiness directive. The FAA's subject line: Servo Piston Shaft. System: propeller.
What it applies to as the FAA lists it
- Kind of product
- Propeller
- Makes
- Hamilton Standard Division
- Models
- 232, 242, 34D
Dates and paperwork
- Docket
- Unknown
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (843 characters)
54-10-01 HAMILTON STANDARD: Applies to All Models 23260, 24260, and 34D Series Propellers Using Wedge Insert Type Low Pitch Assemblies.
Compliance required as indicated.
In order to preclude any possibility of reverse system malfunction caused by breakage of the servo piston shaft as a result of fatigue in highly stressed areas:
1. At the earliest opportunity, but not later than the first overhaul subsequent to June 1, 1954, dimensionally inspect the internal diameter of all 75361 and previous wedge insert type servo piston shafts for a maximum of 0.688 inch.
2. Magnetically inspect the stop return spring seat thread area of the shafts at the period specified in item 1 and at every overhaul subsequent to that period.
(Hamilton Standard Service Bulletin No. 287, revised March 5, 1954, covers these same inspections.)
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/54-10-01.json · aircraft systems.