AD 74-25-11

final rule

LOCKHEED-CALIFORNIA Model L-1011-385-1 Series Airplanes

AD Number
74-25-11
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft Lockheed Martin Corporation L-1011-385-1 LOCKHEED-CALIFORNIA Model L-1011-385-1 Series Airplanes

Unsafe Condition

Incipient failure condition in the housing of the fire pull handle module assembly, P/N 1520324.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Adopt changes to the operator's operation manual: (1) Reschedule 'Fuel Tank Valve - Check Closed' as the first step before 'If warning persists after 30 seconds, discharge second bottle.' (2) Incorporate an operating limitation requiring APU auto-fire shutdown system to be armed during flight APU operation until SB 093-26-010, Part 2E is accomplished for APU fire pull handle P/N 1520324.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within 72 hours of receipt of this AD.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Lockheed-CALIFORNIA Model L-1011-385-1 Series airplanes, certificated in all categories.

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

Fire Pull Handle Module Assembly

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_74-25-11.html
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Details
AD Number:
74-25-11
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
LOCKHEED-CALIFORNIA Model L-1011-385-1 Series Airplanes
Subject:
Fire Pull Handle Module Assembly
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
12/16/1974
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Superseded AD: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Superseded By: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: 74-25-11
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2042

AD NUMBER:   74-25-11

SUBJECT HEADING:   LOCKHEED-CALIFORNIA Model L-1011-385-1 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective December 16, 1974.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
74-25-11 LOCKHEED-CALIFORNIA: Amendment 39-2042. Applies to L-1011-385-1 Series airplanes, certificated in all categories.

Compliance required as indicated.

To provide protection in the event of unknown incipient failure condition in the housing of the fire pull handle module assembly, P/N 1520324, accomplish the following:

Within 72 hours of receipt of this AD, adopt the following changes to the operator's operation manual, or its equivalent.

(1) Change the EMERGENCY OPERATING PROCEDURES section to read, in pertinent part: 'Engine Fire or Severe Damage.' Reschedule reference step "Fuel Tank Valve - Check Closed" to be accomplished as the first referenced item prior to, "If warning persists after 30 seconds, discharge second bottle." NOTE: The manufacturer is issuing a revision to the FAA- approved airplane flight manual which covers the same subject.

(2) Incorporate and comply with the following operating limitation: "Any APU operation in flight shall be with the APU auto-fire shutdown system armed and operative", until Lockheed Service Bulletin 093-26-010, Part 2E, has been accomplished for the APU fire pull handle, P/N 1520324.

This amendment is effective December 16, 1974, and was effective November 20, 1974, for all recipients of the telegram dated November 20, 1974, which contained this amendment.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_74-25-11.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
74-25-11
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
LOCKHEED-CALIFORNIA Model L-1011-385-1 Series Airplanes
Subject:
Fire Pull Handle Module Assembly
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
12/16/1974
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: 74-25-11
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2042

AD NUMBER:   74-25-11

SUBJECT HEADING:   LOCKHEED-CALIFORNIA Model L-1011-385-1 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective December 16, 1974.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
74-25-11 LOCKHEED-CALIFORNIA: Amendment 39-2042. Applies to L-1011-385-1 Series airplanes, certificated in all categories.

Compliance required as indicated.

To provide protection in the event of unknown incipient failure condition in the housing of the fire pull handle module assembly, P/N 1520324, accomplish the following:

Within 72 hours of receipt of this AD, adopt the following changes to the operator's operation manual, or its equivalent.

(1) Change the EMERGENCY OPERATING PROCEDURES section to read, in pertinent part: 'Engine Fire or Severe Damage.' Reschedule reference step "Fuel Tank Valve - Check Closed" to be accomplished as the first referenced item prior to, "If warning persists after 30 seconds, discharge second bottle." NOTE: The manufacturer is issuing a revision to the FAA- approved airplane flight manual which covers the same subject.

(2) Incorporate and comply with the following operating limitation: "Any APU operation in flight shall be with the APU auto-fire shutdown system armed and operative", until Lockheed Service Bulletin 093-26-010, Part 2E, has been accomplished for the APU fire pull handle, P/N 1520324.

This amendment is effective December 16, 1974, and was effective November 20, 1974, for all recipients of the telegram dated November 20, 1974, which contained this amendment.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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