AD 2006-17-15

The FAA is adopting a new airworthiness directive (AD) for certain McDonnell Douglas Model DC-10-10 and DC-10-10F airplanes; and Model MD-10-10F airplanes. This AD requires replacing the clamp bases for the fuel vent pipe with improved clamp bases. This AD results from reports that the foil wrapping on existing plastic clamp bases has migrated out of position, which compromises the bonding of the fuel vent pipes to the airplane structure. We are issuing this AD to ensure that the fuel vent pipes are properly bonded to the airplane structure. Improper bonding could prevent electrical energy from a lightning strike from dissipating to the airplane structure, and create an ignition source, which could result in a fuel tank explosion.

Final rule.

2006-17-15 McDonnell Douglas: Amendment 39-14736. Docket No. FAA- 2006-24999; Directorate Identifier 2006-NM-060-AD. \n\nEffective Date \n\n\n\t(a) This AD becomes effective September 29, 2006. \n\nAffected ADs \n\n\n\t(b) None. \n\nApplicability \n\n\n\t(c) This AD applies to McDonnell Douglas Model DC-10-10 and DC- 10-10F airplanes; and Model MD-10-10F airplanes, certificated in any category; as identified in Boeing Service Bulletin DC10-28-243, dated February 22, 2005. \n\nUnsafe Condition \n\n\n\t(d) This AD results from reports that the foil wrapping on existing plastic clamp bases has migrated out of position, which compromises the bonding of the fuel vent pipes to the airplane structure. We are issuing this AD to ensure that the fuel vent pipes are properly bonded to the airplane structure. Improper bonding could prevent electrical energy from a lightning strike from dissipating to the airplane structure, and create an ignition source, which could result in a fuel tank explosion.Compliance \n\n\n\t(e) You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. \n\nClamp Base Replacement \n\n\n\t(f) Within 60 months after the effective date of this AD: Replace the existing plastic clamp bases for the fuel vent pipe with improved metal clamp bases, by doing all of the applicable actions as specified in the Accomplishment Instructions of Boeing Service Bulletin DC10-28-243, dated February 22, 2005. All corrective actions that are required following the conductivity verification, which is included in the replacement procedures, must be done before further flight. \n\nAlternative Methods of Compliance (AMOCs) \n\n\n\t(g)(1) The Manager, Los Angeles Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. \n\t(2) Before using any AMOC approved in accordance with Sec. 39.19on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. \n\nMaterial Incorporated by Reference \n\n\n\t(h) You must use Boeing Service Bulletin DC10-28-243, dated February 22, 2005, to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of this document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Boeing Commercial Airplanes, Long Beach Division, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Data and Service Management, Dept. C1-L5A (D800-0024), for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., Room PL-401, Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html .

Examining the Docket \n\n\n\tYou may examine the airworthiness directive (AD) docket on the Internet at http://dms.dot.gov or in person at the Docket Management Facility office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Management Facility office (telephone (800) 647-5227) is located on the plaza level of the Nassif Building at the street address stated in the ADDRESSES section. \n\nDiscussion \n\n\n\tThe FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that would apply to certain McDonnell Douglas Model DC-10-10 and DC-10-10F airplanes; and Model MD-10-10F airplanes. That NPRM was published in the Federal Register on June 12, 2006 (71 FR 33663). That NPRM proposed to require replacing the clamp bases for the fuel vent pipe with improved clamp bases. \n\nComments \n\n\n\tWe provided the public the opportunity to participate in the development of this AD. We received no comments on the NPRM or on the determination of the cost to the public. \n\nConclusion \n\n\n\tWe have carefully reviewed the available data and determined that air safety and the public interest require adopting the AD as proposed. \n\nCosts of Compliance \n\n\n\tThere are about 12 airplanes of the affected design in the worldwide fleet. This AD will affect about 12 airplanes of U.S. registry. The required actions will take about 2 work hours per airplane, at an average labor rate of $80 per work hour. Required parts will cost about $502 per airplane. Based on these figures, the estimated cost of this AD for U.S. operators is $7,944, or $662 per airplane. \n\nAuthority for This Rulemaking \n\n\n\tTitle 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, Section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the Agency's authority. \n\tWe are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701, General requirements. Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. \n\nRegulatory Findings \n\n\n\tWe have determined that this AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. \n\tFor the reasons discussed above, I certify that this AD: \n\t(1) Is not a significant regulatory action under ExecutiveOrder 12866; \n\t(2) Is not a significant rule under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and \n\t(3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. \n\tWe prepared a regulatory evaluation of the estimated costs to comply with this AD and placed it in the AD docket. See the ADDRESSES section for a location to examine the regulatory evaluation. \n\nList of Subjects in 14 CFR Part 39 \n\n\tAir transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. \n\nAdoption of the Amendment \n\n0 Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: \n\nPART 39--AIRWORTHINESS DIRECTIVES \n\n1. The authority citation for part 39 continues to read as follows: \n\n\n\tAuthority: 49 U.S.C. 106(g), 40113, 44701. \n\nSec. 39.13 (Amended) \n\n2. The Federal Aviation Administration(FAA) amends Sec. 39.13 by adding the following new airworthiness directive (AD):