AD 2000-24-17 Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes

Models named: MD-11 series. Read the applicability below — it usually turns on serial or part numbers too.

Model MD-11 series airplanes, certificated in any category, having the serial numbers listed below. Group 1 Airplanes               48565 48566 48533 48549 48470 48406 48504 48602 48603 48571 48439 48605 48572 48471 48573 48600 48601 48633 48513 48574 48575 48542 48543 48576 48415 48631 48544 48632 48577 48545 48578 48546 48743 48744 48747 48748 48745 48746 48749 48579 48766 48768 48767 48769 48754 48623 48770 48753 48773 48774 48755 48758 1  48775-48779 48624 48756 48780 48532 1  Inclusive. Group 2 Airplanes:               48555 48556 48581 48630 48557 48539 48558 48559 48616 48560 48617 48618 48561 48629 48562 48563 48757 48540 48564 48634 48541 48798 1  48781-48792 48794 48799 48801 48800 1  48802-48806 1  Inclusive. Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (f) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.

Required as indicated, unless accomplished previously. To prevent overheating of the electrical pins inside the cargo control units (CCU) and subsequent release of hot gases and flames, which could result in smoke and fire in the cargo compartment, accomplish the following: Restatement of Requirements of AD 2000-05-01 Deactivation (a) For Group 1 airplanes having serial numbers other than that identified in paragraph (c) of this AD: Within 15 days after March 20, 2000 (the effective date of AD 2000-05-01, amendment 39-11610), deactivate the forward and center CCU's in accordance with the following procedures: (1) Remove the access panel to the forward cargo compartment CCU circuit breaker panel located at fuselage station 1009.300 (right side looking aft). Pull and collar the following circuit breakers:             B1-506 B1-489 B1-488 B1-487 B1-486 B1-485 B1-480 B1-481 B1-498 B1-482 B1-500 B1-495 B1-499 B1-490 (2) Remove the access panel to the center cargo compartment CCU circuit breaker panel located at fuselage station 1701.000 (right side looking aft). Pull and collar the following circuit breakers:             B1-552 B1-762 B1-761 B1-760 B1-759 B1-758 B1-518 B1-519 B1-751 B1-520 B1-753 B1-764 B1-752 B1-763 (b) For Group 2 airplanes having serial numbers other than that identified in paragraph (c) of this AD: Within 15 days after March 20, 2000, deactivate the forward and center CCU's in accordance with the following procedures: (1) Remove the access panel to the forward cargo compartment CCU circuit breaker panel located at fuselage station 1009.300 (right side looking aft). Pull and collar the following circuit breakers:             B1-506 B1-489 B1-488 B1-487 B1-486 B1-485 B1-480 B1-481 B1-498 B1-482 B1-500 B1-495 B1-499 B1-490 (2) Remove the access panel to the center cargo compartment CCU circuit breaker panel located at fuselage station 1701.000 (right side looking aft). Pull and collar the following circuit breakers:             B1-552 B1-762 B1-761 B1-760 B1-759 B1-758 B1-518 B1-519 B1-751 B1-520 B1-753 B1-764 B1-752 Restatement of Requirements of AD 2000-08-03 Deactivation (c) For Group 1 airplane, serial number 48769, and for Group 2 airplane, serial number 48563: Within 15 days after May 5, 2000 (the effective date of AD 2000-08-03, amendment 39-11689), accomplish the actions specified in either paragraph (a) or (b) of this AD, as applicable. New Requirements of This AD Inspection and Modification/Reidentification, If Necessary (d) For Group 1 and Group 2 airplanes: Within 90 days after the effective date of this AD, perform an inspection to determine the part number of the CCU's. (1) If both CCU's have part number (P/N) 462650-21, 462650-22, or 462650-23, the deactivation specified in paragraphs (a), (b), and (c) of this AD is no longer required, and the CCU's may be reactivated. (2) If any CCU has a part number (P/N) other than 462650-21, 462650-22, or 462650-23, within 90 days after the effective date of this AD, perform a general visual inspection to verify that all six external connectors of the CCU have P/N M83723/71XXXXXX or P/N M83723/72XXXXXX stamped on the connector bodies on all TRW Aeronautical Systems, Lucas Aerospace, CCU assemblies, in accordance with Boeing Alert Service Bulletin MD11-25A253, dated March 10, 2000. Note 2: McDonnell Douglas Service Bulletin MD11-25A253, dated March 10, 2000, references TRW Aeronautical Systems, Lucas Aerospace Alert Service Bulletin 462650-25-A01, dated March 10, 2000, as an additional source of service information to accomplish the inspection described above and corrective actions described below. (i) If any connector has a P/N other than M83723/71XXXXXX or M83723/72XXXXXX, prior to further flight, replace the CCU with a spare CCU from the operator's stock that has one of the following P/N: 462650-21, 462650-22, or 462650-23. Following accomplishment of the replacement, the deactivation specified in paragraphs (a), (b), and (c) of this AD is no longer required, and the CCU's may be reactivated. (ii) If any connector has P/N M83723/71XXXXXX or P/N M83723/72XXXXXX, prior to further flight, modify the rear cover (40) of the CCU assembly (including aligning the center hole of the insulator with the center hole on the rear cover (40), and ensuring that the top edge of the insulator is parallel to the top edge of the rear cover), and reidentify the CCU, in accordance with the service bulletin. Following accomplishment of the modification, the deactivation specified in paragraphs (a), (b), and (c) of this AD is no longer required, and the CCU's may be reactivated. Spares (e) As of the effective date of this AD, no person shall install on any airplane any part (identified under “Key Word”), having a “Spare Part No.” listed in paragraph 2.D., “Parts Necessary to Change Spares,” of Boeing Alert Service Bulletin MD11-25A253, dated March 10, 2000. Alternative Methods of Compliance (f) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Los Angeles ACO. Note 3: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Los Angeles ACO. Special Flight Permits (g) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. Incorporation by Reference (h) The actions required by paragraphs (d)(2), (d)(2)(i) and (d)(2)(ii) shall be done in accordance with Boeing Alert Service Bulletin MD11-25A253, dated March 10, 2000. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Boeing Commercial Aircraft Group, Long Beach Division, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Technical Publications Business Administration, Dept. C1-L51 (2-60). Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, California; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. Effective Date (i) This amendment becomes effective on January 8, 2001. Issued in Renton, Washington, on November 22, 2000. Donald L. Riggin, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 00-30442 Filed 12-1-00; 8:45 am] BILLING CODE 4910-13-P