AD 54-10-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hamilton Standard Division | 232 | HAMILTON STANDARD Models 23260, 24260, and 34D Series Propellers |
| aircraft | Hamilton Standard Division | 242 | HAMILTON STANDARD Models 23260, 24260, and 34D Series Propellers |
| aircraft | Hamilton Standard Division | 34D | HAMILTON STANDARD Models 23260, 24260, and 34D Series Propellers |
| propeller | Hamilton Standard Division | 232 | HAMILTON STANDARD Models 23260, 24260, and 34D Series Propellers |
| propeller | Hamilton Standard Division | 242 | HAMILTON STANDARD Models 23260, 24260, and 34D Series Propellers |
| propeller | Hamilton Standard Division | 34D | HAMILTON STANDARD Models 23260, 24260, and 34D Series Propellers |
Unsafe Condition
Fatigue in highly stressed areas of the servo piston shaft could cause breakage, leading to reverse system malfunction.
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Required Actions
Inspect the internal diameter of 75361 and previous wedge insert type servo piston shafts for a maximum of 0.688 inch. Magnetically inspect the stop return spring seat thread area of the shafts at the first overhaul after June 1, 1954, and at every subsequent overhaul.
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Compliance Time
At the earliest opportunity, but not later than the first overhaul subsequent to June 1, 1954
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Affected Aircraft
Hamilton Standard Division Models 23260, 24260, and 34D Series Propellers using Wedge Insert Type Low Pitch Assemblies
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Federal Register Abstract
Servo Piston Shaft
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_54-10-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 54-10-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: HAMILTON STANDARD Models 23260, 24260, and 34D Series Propellers Subject: Servo Piston Shaft Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Hamilton Standard Division Model: 232 | 242 | 34D Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 54-10-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 54-10-01 SUBJECT HEADING: HAMILTON STANDARD Models 23260, 24260, and 34D Series Propellers ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 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.) FOOTER:
Document Text
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AD Final Rules - DRS_54-10-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 54-10-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: HAMILTON STANDARD Models 23260, 24260, and 34D Series Propellers Subject: Servo Piston Shaft Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Hamilton Standard Division Model: 232 | 242 | 34D Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 54-10-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 54-10-01 SUBJECT HEADING: HAMILTON STANDARD Models 23260, 24260, and 34D Series Propellers ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 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.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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