AD 66-29-01
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
Loss of the cowl panels in flight, resulting in damage to the aircraft structure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the side engine cowl panel latch assemblies per Boeing Service Bulletin No. 71-14 or later FAA-approved revision within 1,500 hours' time in service after the effective date. Modify the center engine cowl panel latch frames per Boeing Service Bulletin No. 71-27 or later FAA-approved revision within 3,000 hours' time in service after the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 1,500 hours' time in service after the effective date of this AD (for side engine cowl panels) and within the next 3,000 hours' time in service after the effective date of this AD (for center engine cowl panels).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 727 Series Airplanes including 727-100 Series, 727-100C Series, 727-200 Series, 727-200F Series, 727 Series, and 727C Series.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Cowl Panels
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_66-29-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 66-29-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 727 Series Airplanes Subject: Cowl Panels Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/05/1966 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: 66-29-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-301 AD NUMBER: 66-29-01 SUBJECT HEADING: BOEING Model 727 Series Airplanes ACTION: SUMMARY: DATES: Effective December 5, 1966. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 66-29-01 BOEING: Amdt. 39-301 Part 39 Federal Register November 5, 1966. Applies to Model 727 Series Airplanes. Compliance required as indicated. To prevent loss of the cowl panels in flight, and resulting damage to the aircraft structure, accomplish the following or an equivalent approved by the Chief, Aircraft Engineering Division, FAA Western Region: (a) Within the next 1,500 hours' time in service after the effective date of this AD, unless already accomplished, modify the side engine cowl panel latch assemblies in accordance with Boeing Service Bulletin No. 71-14 or later FAA-approved revision. Replacement of Hartwell Manufacturing Company hook latch spring, P/N 104914-1, with P/N 106054-1 is optional. (b) Within the next 3,000 hours' time in service after the effective date of this AD, unless already accomplished, modify the center engine cowl panel latch frames in accordance with Boeing Service Bulletin No. 71-27 or later FAA-approved revision. This directive effective December 5, 1966. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_66-29-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 66-29-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 727 Series Airplanes Subject: Cowl Panels Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/05/1966 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: 66-29-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-301 AD NUMBER: 66-29-01 SUBJECT HEADING: BOEING Model 727 Series Airplanes ACTION: SUMMARY: DATES: Effective December 5, 1966. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 66-29-01 BOEING: Amdt. 39-301 Part 39 Federal Register November 5, 1966. Applies to Model 727 Series Airplanes. Compliance required as indicated. To prevent loss of the cowl panels in flight, and resulting damage to the aircraft structure, accomplish the following or an equivalent approved by the Chief, Aircraft Engineering Division, FAA Western Region: (a) Within the next 1,500 hours' time in service after the effective date of this AD, unless already accomplished, modify the side engine cowl panel latch assemblies in accordance with Boeing Service Bulletin No. 71-14 or later FAA-approved revision. Replacement of Hartwell Manufacturing Company hook latch spring, P/N 104914-1, with P/N 106054-1 is optional. (b) Within the next 3,000 hours' time in service after the effective date of this AD, unless already accomplished, modify the center engine cowl panel latch frames in accordance with Boeing Service Bulletin No. 71-27 or later FAA-approved revision. This directive effective December 5, 1966. FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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