AD 85-22-51

final rule

LOCKHEED CALIFORNIA COMPANY Model L-1011-385 Series Airplanes

AD Number
85-22-51
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 COMPANY Model L-1011-385 Series Airplanes
aircraft Lockheed Martin Corporation L-1011-385-1-14 LOCKHEED CALIFORNIA COMPANY Model L-1011-385 Series Airplanes
aircraft Lockheed Martin Corporation L-1011-385-1-15 LOCKHEED CALIFORNIA COMPANY Model L-1011-385 Series Airplanes
aircraft Lockheed Martin Corporation L-1011-385-3 LOCKHEED CALIFORNIA COMPANY Model L-1011-385 Series Airplanes

Unsafe Condition

Fires may be ignited by damaged electrical wires in the APU cables and No. 2 engine generator feeder cables located on the left side between the second frame forward of pressure bulkhead and the pressure bulkhead at approximately WL 179.

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

Required Actions

Within ten days after the effective date, inspect the cables for minimum clearance of one-half inch from the bleed air duct insulated cover and proper clamping/insulation condition. If clearance is insufficient or insulation/wire damage is found, adjust or repair before further flight per Lockheed Service Bulletin 093-24-A127 or FAA-approved procedures.

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

Compliance Time

Within ten (10) days after the effective date of this AD

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

Affected Aircraft

Lockheed Model L-1011-385 series airplanes certificated in any category, including models L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, and L-1011-385-3.

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

Federal Register Abstract

APU Cables and Feeder Cable Insp.

Applicability Source Text

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AD Final Rules - DRS_85-22-51.html
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AD Number:
85-22-51
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
LOCKHEED CALIFORNIA COMPANY Model L-1011-385 Series Airplanes
Subject:
APU Cables and Feeder Cable Insp.
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
01/10/1986
Make:
Lockheed Martin Corporation
Model:
L-1011-385-1 | L-1011-385-1-14 | L-1011-385-1-15 | L-1011-385-3
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: 85-22-51
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5199

AD NUMBER:   85-22-51

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

ACTION:  

SUMMARY:  

DATES:   Effective January 10, 1986.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
85-22-51 LOCKHEED CALIFORNIA COMPANY: Amendment 39-5199. Applies to Lockheed Model L-1011-385 series airplanes certificated in any category.

To prevent fires which may be ignited by damaged electrical wires, accomplish the following, unless previously accomplished:

A. Within ten (10) days after the effective date of this AD, using the procedure described in Lockheed Service Bulletin 093-24-A127 dated October 29, 1985, inspect the auxiliary power unit (APU) cables and the No. 2 engine generator feeder cables located on the left side, between the second frame forward of pressure bulkhead and the pressure bulkhead, at approximately Waterline (WL) 179, for a minimum clearance of one-half inch between the cables and the closest part of the bleed air duct insulated cover.

If the clearance is less than one-half inch, before further flight, adjust the cables to provide adequate clearance in accordance with Lockheed Service Bulletin 093-24-A127, dated October 29, 1985.

B. Within ten (10) days after the effective date of this AD, inspect the APU cables and No. 2 engine generator feeder cables located on left side between the second frame forward of pressure bulkhead and the pressure bulkhead at approximately WL 179, which are routed adjacent to the bleed air duct, for proper clamping and condition of insulation. If insulation damage is found, check closely for wire damage. If damage to insulation or wires is found, before further flight, repair in accordance with FAA-approved maintenance procedures.

C. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region.

D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.

All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Lockheed-California Company, P.O. Box 551, Burbank, California 91520, Attention: Commercial Support Contracts, Dept. 63-11, U-33, B-1. These documents also may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California.

This amendment becomes effective January 10, 1986, as to all persons, except those persons to whom it was made immediately effective by telegraphic AD T85-22-51, issued October 30, 1985.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_85-22-51.html
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Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
85-22-51
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
LOCKHEED CALIFORNIA COMPANY Model L-1011-385 Series Airplanes
Subject:
APU Cables and Feeder Cable Insp.
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
01/10/1986
Make:
Lockheed Martin Corporation
Model:
L-1011-385-1 | L-1011-385-1-14 | L-1011-385-1-15 | L-1011-385-3
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: 85-22-51
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5199

AD NUMBER:   85-22-51

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

ACTION:  

SUMMARY:  

DATES:   Effective January 10, 1986.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
85-22-51 LOCKHEED CALIFORNIA COMPANY: Amendment 39-5199. Applies to Lockheed Model L-1011-385 series airplanes certificated in any category.

To prevent fires which may be ignited by damaged electrical wires, accomplish the following, unless previously accomplished:

A. Within ten (10) days after the effective date of this AD, using the procedure described in Lockheed Service Bulletin 093-24-A127 dated October 29, 1985, inspect the auxiliary power unit (APU) cables and the No. 2 engine generator feeder cables located on the left side, between the second frame forward of pressure bulkhead and the pressure bulkhead, at approximately Waterline (WL) 179, for a minimum clearance of one-half inch between the cables and the closest part of the bleed air duct insulated cover.

If the clearance is less than one-half inch, before further flight, adjust the cables to provide adequate clearance in accordance with Lockheed Service Bulletin 093-24-A127, dated October 29, 1985.

B. Within ten (10) days after the effective date of this AD, inspect the APU cables and No. 2 engine generator feeder cables located on left side between the second frame forward of pressure bulkhead and the pressure bulkhead at approximately WL 179, which are routed adjacent to the bleed air duct, for proper clamping and condition of insulation. If insulation damage is found, check closely for wire damage. If damage to insulation or wires is found, before further flight, repair in accordance with FAA-approved maintenance procedures.

C. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region.

D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.

All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Lockheed-California Company, P.O. Box 551, Burbank, California 91520, Attention: Commercial Support Contracts, Dept. 63-11, U-33, B-1. These documents also may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California.

This amendment becomes effective January 10, 1986, as to all persons, except those persons to whom it was made immediately effective by telegraphic AD T85-22-51, issued October 30, 1985.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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