AD 83-09-51 R1

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AD Number:
83-09-51 R1
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
LOCKHEED-CALIFORNIA COMPANY Model L-1011 Series Airplanes
Subject:
Revision to AFM LR-25925
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
08/18/1983
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Superseded AD: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Superseded By: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: 83-09-51 R1
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-4704

AD NUMBER:   83-09-51 R1

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

ACTION:  

SUMMARY:  

DATES:   Effective August 18, 1983.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
83-09-51 R1 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-4704. Applies to Lockheed California Company L-1011 series airplanes certificated in all categories prior to S/N 1201 not in compliance with Lockheed L-1011 Service Bulletin 093-28-060, dated June 18, 1980; Revision 1, dated November 20, 1980; Revision 2, dated April 28, 1983; or later revisions approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. Compliance required as indicated unless previously accomplished.

A. Within 5 calendar days after receipt of this AD, revise the Lockheed L-1011 FAA approved Airplane Flight Manual (AFM) LR-25925 to add the following and provide to flight crews:

SECTION 1 - LIMITATIONS
FUEL SYSTEM

1. In addition to normal fuel reserves, flight planning must be predicated on the following:

(a) A fuel fitting failure occurs in tank 2L or 2R at anytime during the flight.

(b) At the time of failure, the fuel in tanks 2L and 2R is considered to be trapped and unavailable to any engine.

(c) At the time of failure, number 2 engine is considered to become inoperative, and

(d) At the time of failure, a landing can be accomplished at a suitable airport with the remaining fuel in tanks 1 and 3.

2. The center crossfeed valve between tanks 1 and 3 must be operational prior to all flight operations.

3. Inflight crossfeed operations to number 2 engine are prohibited if either cockpit fuel quantity indicating system for tank 2L or 2R is inoperative prior to takeoff.

4. The fuel flow equalizer must be operational prior to all flight operations.

5. Integrated drive generator (IDG) assembly for engines number 1 and 3 must be operative prior to all flight operations more than 400 nautical miles from a suitable airport.

NOTE: Not applicable to aircraft equipped with APU fuel supply from tank 3. If number 2 engine is shutdown, then engine 2 tank valve must be closed.

6. During flight, the fuel quantity in each tank must be closely monitored and logged at intervals not to exceed 15 minutes.

SECTION 2 - EMERGENCIES
UNCONTROLLED FUEL TRANSFER
INTO FUEL TANK 2L OR 2R
REFERENCE

If a fuel quantity differential of 1500 lbs. or more develops between tanks 2L and 2R, the following procedure applies:

1. All tank pumps ON

2. All fuel crossfeed valves CLOSED

3. Tank pumps (low quantity tank 2L or 2R) OFF

4. Fuel quantity indicators MONITOR

5A. If fuel quantity differential between tank 2L and 2R decreases, resume normal operation when fuel tank quantities are equal.

5B. If fuel quantity differential between tank 2L and 2R remains constant, or is increasing:

(1) All tank 2L and 2R fuel pumps OFF

(2) Aircraft range CHECK

(3) Continue number 2 engine operation on suction feed until the low fuel pressure light illuminates.

(4) Shut down number 2 engine.

B. A copy of this AD inserted in the FAA approved AFM may be considered as an acceptable means of compliance with required AFM revisions.

C. Within 1200 hours time in service, or four (4) months after the effective date of this amendment, whichever occurs first, inspect and replace, if necessary, P/N 1527605-101 fittings in fuel tanks 2L and 2R as specified in Part 2, Accomplishment Instructions of Lockheed L-1011 Service Bulletin 093-28-060, dated June 18, 1980; Revision 1, dated November 20, 1980; Revision 2, dated April 28, 1983; or later revisions approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. This action terminates the requirement for the AFM revised limitations and emergency procedures required in paragraph A., above.

D. 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.

E. 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 repair 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 August 18, 1983, and was effective earlier to those recipients of telegraphic AD T83-09-51, dated May 3, 1983.

FOOTER: