AD 74-26-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | L-1011-385-1 | LOCKHEED-CALIFORNIA Model L-1011-385-1 Series Airplanes |
Unsafe Condition
An unknown incipient failure condition in the housing of the fire pull handle assembly, P/N 1520324 or P/N 1580810, could occur.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the Control Panel Assembly per Part 2 of Lockheed Service Bulletin 093-26-010, and re-identify modified assemblies per Part 3B of the same service bulletin. Equivalent repairs or modifications may be approved by the FAA.
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Compliance Time
Within 600 hours time in service after the effective date of this AD
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Affected Aircraft
Lockheed-CALIFORNIA Model L-1011-385-1 Series Airplanes with Engine Shutoff Control Panel Assemblies P/N 1520324 or P/N 1580810
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Federal Register Abstract
Fire Pull Handle Assembly
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_74-26-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 74-26-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED-CALIFORNIA Model L-1011-385-1 Series Airplanes Subject: Fire Pull Handle Assembly Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/04/1975 Make: Lockheed Martin Corporation Model: L-1011-385-1 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 74-26-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2104 AD NUMBER: 74-26-06 SUBJECT HEADING: LOCKHEED-CALIFORNIA Model L-1011-385-1 Series Airplanes ACTION: SUMMARY: DATES: Effective March 4, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 74-26-06 LOCKHEED-CALIFORNIA: Amendment 39-2049 as amended by Amendment 39-2104. Applies to all L-1011-385-1 Series Airplanes certificated in all categories, incorporating Engine Shutoff Control Panel Assemblies, P/N 1520324 or P/N 1580810, all configurations. Compliance required as indicated, unless already accomplished. To provide protection in the event of an unknown incipient failure condition in the housing of the fire pull handle assembly, P/N 1520324 or P/N 1580810, accomplish the following: (1) Within 600 hours time in service after the effective date of this AD, as amended, (a) Modify the Control Panel Assembly, P/N 1520324 or P/N 1580810, in accordance with Part 2 of Lockheed Service Bulletin 093-26-010, dated November 21, 1974, revised February 11, 1975 or later FAA-approved revisions. (b) Re-identify all modified Control Panel Assemblies in accordance with Part 3B of Lockheed Service Bulletin 093-26-010, dated November 21, 1974, revised February 11, 1975, or later FAA-approved revisions. (2) Equivalent repairs or modifications may be approved by the Chief, Aircraft Engineering Division, FAA Western Region, upon submission of adequate substantiating data. Note: Those engine shutoff control panel assemblies marked as P/N 1604009 or P/N 1605009 are in compliance with this AD. Amendment 39-2049 was effective December 23, 1974. This amendment 39-2104 to AD 74-26-06 becomes effective March 4, 1975. FOOTER:
Document Text
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AD Final Rules - DRS_74-26-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 74-26-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED-CALIFORNIA Model L-1011-385-1 Series Airplanes Subject: Fire Pull Handle Assembly Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/04/1975 Make: Lockheed Martin Corporation Model: L-1011-385-1 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: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 74-26-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2104 AD NUMBER: 74-26-06 SUBJECT HEADING: LOCKHEED-CALIFORNIA Model L-1011-385-1 Series Airplanes ACTION: SUMMARY: DATES: Effective March 4, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 74-26-06 LOCKHEED-CALIFORNIA: Amendment 39-2049 as amended by Amendment 39-2104. Applies to all L-1011-385-1 Series Airplanes certificated in all categories, incorporating Engine Shutoff Control Panel Assemblies, P/N 1520324 or P/N 1580810, all configurations. Compliance required as indicated, unless already accomplished. To provide protection in the event of an unknown incipient failure condition in the housing of the fire pull handle assembly, P/N 1520324 or P/N 1580810, accomplish the following: (1) Within 600 hours time in service after the effective date of this AD, as amended, (a) Modify the Control Panel Assembly, P/N 1520324 or P/N 1580810, in accordance with Part 2 of Lockheed Service Bulletin 093-26-010, dated November 21, 1974, revised February 11, 1975 or later FAA-approved revisions. (b) Re-identify all modified Control Panel Assemblies in accordance with Part 3B of Lockheed Service Bulletin 093-26-010, dated November 21, 1974, revised February 11, 1975, or later FAA-approved revisions. (2) Equivalent repairs or modifications may be approved by the Chief, Aircraft Engineering Division, FAA Western Region, upon submission of adequate substantiating data. Note: Those engine shutoff control panel assemblies marked as P/N 1604009 or P/N 1605009 are in compliance with this AD. Amendment 39-2049 was effective December 23, 1974. This amendment 39-2104 to AD 74-26-06 becomes effective March 4, 1975. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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