AD 75-04-10

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AD Number:
75-04-10
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
LOCKHEED Model L-1011-385-1 Airplanes
Subject:
Heater Overheat Conditions
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
02/19/1975
Make:
Lockheed Martin Corporation
Model:
L-1011-385-1 | L-1011-385-1-14 | L-1011-385-1-15
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Superseded AD: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Superseded By: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: 75-04-10
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2090

AD NUMBER:   75-04-10

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

ACTION:  

SUMMARY:  

DATES:   Effective February 19, 1975.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
75-04-10 LOCKHEED: Amendment 39-2090. Applies to L-1011-385-1 airplanes certificated in all categories.

Compliance required within 10 calendar days after the effective date of this AD, unless already accomplished.

To prevent heater blanket overheat conditions and possible fires caused by a malfunctioning cargo sump drain heater, Electrofilm P/N 111202-101 (LAC Control No. 672726- 101), accomplish (a) or (b) below:

(a) Disconnect the C-1, C-2, and C-3 cargo compartment drain heaters per Lockheed Alert Service Bulletin 093-30-A032, dated January 23, 1975, or later FAA-approved revisions, or;

(b) Equivalent deactivation modifications approved by the Chief, Aircraft Engineering Division, FAA Western Region.

(c) An airplane may be flown to a base for the performance of the work required by this AD per FAR's 21.197 and 21.199.

(d) The C-1, C-2 and C-3 cargo compartment drain heaters may be reactivated in accordance with modifications or instructions approved by the Chief, Aircraft Engineering Division, FAA Western Region. The approved data must reference this AD, and the FAA-approval date.

This amendment becomes effective February 19, 1975.

FOOTER: