AD 55-05-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hamilton Standard Division | 43E | HAMILTON STANDARD Models 43E60 Propellers |
| propeller | Hamilton Standard Division | 43E | HAMILTON STANDARD Models 43E60 Propellers |
Unsafe Condition
The analysis of loadings and stresses in the Hamilton Standard 43E60/6903 propeller revealed a need to improve the strength characteristics of the propeller barrel assembly to preclude failures.
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Required Actions
Shotpeen the propeller barrel and spider in specified areas and replace the barrel bolts as specified in Hamilton Standard Service Bulletin No. 316 dated September 10, 1954.
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Compliance Time
At the earliest opportunity, but not later than the first overhaul subsequent to May 1, 1955
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Affected Aircraft
Hamilton Standard 43E60 Propellers with 6903 Blades installed on Lockheed 1049 Series Aircraft powered by Wright 972TC-18DA Series Engines.
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Federal Register Abstract
Barrel Assembly
Applicability Source Text
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AD Final Rules - DRS_55-05-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 55-05-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: HAMILTON STANDARD Models 43E60 Propellers Subject: Barrel Assembly Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Hamilton Standard Division Model: 43E Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 55-05-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 55-05-02 SUBJECT HEADING: HAMILTON STANDARD Models 43E60 Propellers ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 55-05-02 HAMILTON STANDARD: Applies to All 43E60 Propellers With 6903 Blades Installed on Lockheed 1049 Series Aircraft Powered by Wright 972TC-18DA Series Engines. Compliance required as indicated. Analysis of loadings and stresses in the Hamilton Standard 43E60/6903 propeller when installed as noted has shown that it is desirable to improve the strength characteristics of the propeller barrel assembly by shotpeening the barrel and spider in specified areas, and by substituting stronger barrel bolts. Therefore, in order to preclude any failures from this cause: At the earliest opportunity, but not later than the first overhaul subsequent to May 1, 1955, accomplish the rework of the hub barrels and spiders, and replace the barrel bolts as specified in Hamilton Standard Service Bulletin No. 316 dated September 10, 1954. FOOTER:
Document Text
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AD Final Rules - DRS_55-05-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 55-05-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: HAMILTON STANDARD Models 43E60 Propellers Subject: Barrel Assembly Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Hamilton Standard Division Model: 43E 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: 55-05-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 55-05-02 SUBJECT HEADING: HAMILTON STANDARD Models 43E60 Propellers ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 55-05-02 HAMILTON STANDARD: Applies to All 43E60 Propellers With 6903 Blades Installed on Lockheed 1049 Series Aircraft Powered by Wright 972TC-18DA Series Engines. Compliance required as indicated. Analysis of loadings and stresses in the Hamilton Standard 43E60/6903 propeller when installed as noted has shown that it is desirable to improve the strength characteristics of the propeller barrel assembly by shotpeening the barrel and spider in specified areas, and by substituting stronger barrel bolts. Therefore, in order to preclude any failures from this cause: At the earliest opportunity, but not later than the first overhaul subsequent to May 1, 1955, accomplish the rework of the hub barrels and spiders, and replace the barrel bolts as specified in Hamilton Standard Service Bulletin No. 316 dated September 10, 1954. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
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