AD 66-24-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-100C Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200 Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200F Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727 Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727C Series | BOEING Model 727 Series Airplanes |
Unsafe Condition
Failure of the stabilizer trim system brake (Boeing P/N 10-60822-1, Western Gear P/N 4472R155, serial numbers 101 through 225) could result in uncommanded movement of the stabilizer trim, leading to loss of aircraft control.
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Required Actions
Modify the stabilizer trim system brake by installing additional spacers under the pawls as specified in Western Gear Service Bulletin paragraph (2).
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Compliance Time
within the next 2,500 hours' time in service after the effective date of this AD
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Affected Aircraft
Boeing Model 727 Series airplanes including 727-100, 727-100C, 727-200, 727-200F, 727 Series, and 727C Series with stabilizer trim system brake Boeing P/N 10-60822-1, Western Gear P/N 4472R155, serial numbers 101 through 225.
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Federal Register Abstract
Stabilizer Trim System Brake
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_66-24-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 66-24-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 727 Series Airplanes Subject: Stabilizer Trim System Brake Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/22/1966 Make: The Boeing Company Model: 727-100 Series | 727-100C Series | 727-200 Series | 727-200F Series | 727 Series | 727C Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 66-24-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-290 AD NUMBER: 66-24-01 SUBJECT HEADING: BOEING Model 727 Series Airplanes ACTION: SUMMARY: DATES: Effective October 22, 1966. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 66-24-01 BOEING: Amdt. 39-290 Part 39 Federal Register September 22, 1966. Applies to Model 727 Series Airplanes. Compliance required within the next 2,500 hours' time in service after the effective date of this AD, unless already accomplished. Modify stabilizer trim system brake, Boeing P/N 10-60822-1, Western Gear P/N 4472R155, Western Gear Serial Numbers 101 through 225 in accordance with paragraph (2) of Western Gear Service Bulletin "Flight Controls-Stabilizer Brake Assembly Western Gear P/N 4472R155 Install Additional Spacers Under Pawls." This directive effective October 22, 1966. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_66-24-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 66-24-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 727 Series Airplanes Subject: Stabilizer Trim System Brake Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/22/1966 Make: The Boeing Company Model: 727-100 Series | 727-100C Series | 727-200 Series | 727-200F Series | 727 Series | 727C Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 66-24-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-290 AD NUMBER: 66-24-01 SUBJECT HEADING: BOEING Model 727 Series Airplanes ACTION: SUMMARY: DATES: Effective October 22, 1966. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 66-24-01 BOEING: Amdt. 39-290 Part 39 Federal Register September 22, 1966. Applies to Model 727 Series Airplanes. Compliance required within the next 2,500 hours' time in service after the effective date of this AD, unless already accomplished. Modify stabilizer trim system brake, Boeing P/N 10-60822-1, Western Gear P/N 4472R155, Western Gear Serial Numbers 101 through 225 in accordance with paragraph (2) of Western Gear Service Bulletin "Flight Controls-Stabilizer Brake Assembly Western Gear P/N 4472R155 Install Additional Spacers Under Pawls." This directive effective October 22, 1966. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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