AD 63-24-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Curtiss-Wright Corporation | C634S | CURTISS-WRIGHT Models C634S-C400 through -C499 and C634S-C500 through -C599 Series Propellers |
| propeller | Curtiss-Wright Corporation | C634S | CURTISS-WRIGHT Models C634S-C400 through -C499 and C634S-C500 through -C599 Series Propellers |
Unsafe Condition
Failures of P/N 142080-1 threaded-type brake assemblies causing propeller malfunction.
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Required Actions
Replace P/N 142080-1 brake assemblies with P/N 149252-1, 152908-2, or 161462-2 brake assemblies.
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Compliance Time
within 100 hours' time in service after the effective date of this AD
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Affected Aircraft
Curtiss-Wright Corporation Models C634S-C400 through -C499 and C634S-C500 through -C599 Series Propellers equipped with P/N 142080-1 Brake Assemblies.
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Federal Register Abstract
Brake Assemblies
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_63-24-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 63-24-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: CURTISS-WRIGHT Models C634S-C400 through -C499 and C634S-C500 through -C599 Series Propellers Subject: Brake Assemblies Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/27/1963 Make: Curtiss-Wright Corporation Model: C634S Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 63-24-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 63-24-01 SUBJECT HEADING: CURTISS-WRIGHT Models C634S-C400 through -C499 and C634S-C500 through -C599 Series Propellers ACTION: SUMMARY: DATES: Effective December 27, 1963. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 63-24-01 CURTISS-WRIGHT: Amdt. 647 Part 507 Federal Register November 26, 1963. Applies to All Models C634S-C400 through -C499 and C634S-C500 through -C599 Series Propellers Equipped With P/N 142080-1 Brake Assemblies. (These Propellers May Be Found Installed On Such Aircraft as Lockheed 749 and 1049.) Compliance required within 100 hours' time in service after the effective date of this AD. There have been failures of P/N 142080-1, threaded-type brake assemblies, causing the propellers to malfunction. To correct this unsafe condition, the following shall be accomplished: Replace P/N 142080-1 brake assemblies with P/N's 149252-1, 152908-2, or 161462-2 brake assemblies. (Curtiss Service Bulletins Nos. C-14 and C-32 and Parts Bulletins C-52, C-67, C-80 and C-90 cover this same subject.) This directive effective December 27, 1963. FOOTER:
Document Text
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AD Final Rules - DRS_63-24-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 63-24-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: CURTISS-WRIGHT Models C634S-C400 through -C499 and C634S-C500 through -C599 Series Propellers Subject: Brake Assemblies Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/27/1963 Make: Curtiss-Wright Corporation Model: C634S 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: 63-24-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 63-24-01 SUBJECT HEADING: CURTISS-WRIGHT Models C634S-C400 through -C499 and C634S-C500 through -C599 Series Propellers ACTION: SUMMARY: DATES: Effective December 27, 1963. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 63-24-01 CURTISS-WRIGHT: Amdt. 647 Part 507 Federal Register November 26, 1963. Applies to All Models C634S-C400 through -C499 and C634S-C500 through -C599 Series Propellers Equipped With P/N 142080-1 Brake Assemblies. (These Propellers May Be Found Installed On Such Aircraft as Lockheed 749 and 1049.) Compliance required within 100 hours' time in service after the effective date of this AD. There have been failures of P/N 142080-1, threaded-type brake assemblies, causing the propellers to malfunction. To correct this unsafe condition, the following shall be accomplished: Replace P/N 142080-1 brake assemblies with P/N's 149252-1, 152908-2, or 161462-2 brake assemblies. (Curtiss Service Bulletins Nos. C-14 and C-32 and Parts Bulletins C-52, C-67, C-80 and C-90 cover this same subject.) This directive effective December 27, 1963. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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Related Airworthiness Directives
56-08-01
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59-18-03
final ruleCURTISS Models C634S-C400 and C634S-C500 Series Propellers
Unsafe Condition: Peculiar wear of power unit motor and mating speed reducer splines in Curtiss C634S-C400 and C634S-C500 Series propellers has been observed at a time short of a full overhaul period.
59-07-01
final ruleCURTISS Models C634S-C400 and C634S-C500 Series Propellers
Unsafe Condition: Excessive wear of power unit motor and mating speed reducer splines in Curtiss C634S-C400 and C634S-C500 Series propellers has been observed at a time short of a full overhaul period.