AD 60-20-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hamilton Standard Division | 34E | HAMILTON STANDARD Models 34E60 Propellers |
| propeller | Hamilton Standard Division | 34E | HAMILTON STANDARD Models 34E60 Propellers |
Unsafe Condition
Dome cap fractures resulting in propeller overspeed and inability to feather.
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Required Actions
Inspect dome caps in the threaded area for crack indications using visual, dye penetrant, or magnetic particle inspection within 50 hours' time in service. Reinspect with dye penetrant or magnetic particle inspection within 200 hours' time in service if initial inspection was visual. Replace cracked caps with inspected, uncracked caps. Retighten to 350-450 foot-pounds upon reinstallation. Repeat inspections every 350 hours' time in service until P/N 565334 dome caps are installed.
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Compliance Time
Compliance required as indicated.
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Affected Aircraft
Hamilton Standard Division Models 34E60 Propellers on Douglas DC-7 Series and Boeing B-377 aircraft.
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Federal Register Abstract
Dome Cap
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_60-20-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 60-20-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: HAMILTON STANDARD Models 34E60 Propellers Subject: Dome Cap Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Hamilton Standard Division Model: 34E Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 60-20-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 60-20-02 SUBJECT HEADING: HAMILTON STANDARD Models 34E60 Propellers ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 60-20-02 HAMILTON STANDARD: Amdt. 201 Part 507 Federal Register September 23, 1960. Applies to All 34E60 Propellers. Compliance required as indicated. As a result of two recent dome cap fractures one resulting in propeller overspeed and inability to feather the following must be accomplished: (a) All dome caps must be examined in the threaded area for crack indications in the inside diameter and outside diameter by means of visual or dye penetrant or magnetic particle inspection within the next 50 hours' time in service unless already accomplished within the last 50 hours. (b) Dome caps inspected visually only must be reexamined by means of dye penetrant or magnetic particle inspection within the next 200 hours' time in service. (c) Caps with indications of cracks must be replaced with caps which have also been inspected in accordance with the foregoing inspection provisions and found to have no crack indications. (d) Upon reinstallation caps must be tightened to 350-450 foot-pounds. (e) Dome caps must be reexamined by means of dye penetrant or magnetic particle inspection within the next 350 hours' time in service after the last dye penetrant or magnetic particle inspection made in accordance with paragraphs (a) or (b). This inspection must be repeated at intervals not to exceed 350 hours' time in service until new design-strengthened dome caps, P/N 565334, have been installed. (Hamilton Standard telegram to all operators dated September 16, 1960, covers this same subject.) NOTE: The replaced caps should be returned to Hamilton Standard. (Hamilton Standard telegram dated August 29, 1960, covers this subject.) This airworthiness directive sent by telegram to all known operators of Douglas DC-7 Series and Boeing B-377 aircraft equipped with Hamilton Standard 34E60 propellers on September 2, 1960. Effective on date of publication in the Federal Register to all persons not receiving telegram of September 2, 1960. Revised October 15, 1960. FOOTER:
Document Text
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AD Final Rules - DRS_60-20-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 60-20-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: HAMILTON STANDARD Models 34E60 Propellers Subject: Dome Cap Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Hamilton Standard Division Model: 34E 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: 60-20-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 60-20-02 SUBJECT HEADING: HAMILTON STANDARD Models 34E60 Propellers ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 60-20-02 HAMILTON STANDARD: Amdt. 201 Part 507 Federal Register September 23, 1960. Applies to All 34E60 Propellers. Compliance required as indicated. As a result of two recent dome cap fractures one resulting in propeller overspeed and inability to feather the following must be accomplished: (a) All dome caps must be examined in the threaded area for crack indications in the inside diameter and outside diameter by means of visual or dye penetrant or magnetic particle inspection within the next 50 hours' time in service unless already accomplished within the last 50 hours. (b) Dome caps inspected visually only must be reexamined by means of dye penetrant or magnetic particle inspection within the next 200 hours' time in service. (c) Caps with indications of cracks must be replaced with caps which have also been inspected in accordance with the foregoing inspection provisions and found to have no crack indications. (d) Upon reinstallation caps must be tightened to 350-450 foot-pounds. (e) Dome caps must be reexamined by means of dye penetrant or magnetic particle inspection within the next 350 hours' time in service after the last dye penetrant or magnetic particle inspection made in accordance with paragraphs (a) or (b). This inspection must be repeated at intervals not to exceed 350 hours' time in service until new design-strengthened dome caps, P/N 565334, have been installed. (Hamilton Standard telegram to all operators dated September 16, 1960, covers this same subject.) NOTE: The replaced caps should be returned to Hamilton Standard. (Hamilton Standard telegram dated August 29, 1960, covers this subject.) This airworthiness directive sent by telegram to all known operators of Douglas DC-7 Series and Boeing B-377 aircraft equipped with Hamilton Standard 34E60 propellers on September 2, 1960. Effective on date of publication in the Federal Register to all persons not receiving telegram of September 2, 1960. Revised October 15, 1960. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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