Airworthiness Directive · Amendment 39-14211 · Boeing Model 747 Airplanes
Boeing Model 747 Airplanes
Superseded. A later AD replaced this one: AD 2009-10-12. Comply with the one in force.
(c) This AD applies to the airplanes listed in Table 1 of this AD, certificated in any category.
| Boeing— | As identified in— |
|---|---|
| Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, -400F, 747SP, and 747SR series airplanes | Boeing Service Bulletin 747-25-3279, Revision 1, dated July 11, 2002. |
| Model 747-200B, -200C, -300, -400, and -400D series airplanes | Boeing Service Bulletin 747-25-3232, dated July 6, 2000. |
(d) This AD was prompted by a report of 30- to 60-second delays in the inflation of escape slides/rafts. We are issuing this AD to prevent actuation delays in the inflation systems of the escape slides/rafts, which could result in delayed or failed deployment of escape slides/rafts during emergency evacuation of an airplane.
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 747 airplanes. This AD requires modifying the inflation systems of the upper deck escape slides; single-piece off- wing escape ramps/slides; two-piece off-wing escape slides; and door 1, 2, 4, and 5 escape slides/rafts. This AD results from a report of 30- to 60-second delays in the inflation of escape slides/rafts. We are issuing this AD to prevent actuation delays in the inflation systems of the escape slides/rafts, which could result in delayed or failed deployment of escape slides/rafts during emergency evacuation of an airplane.
(f) For Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, -400F, 747SP, and 747SR series airplanes identified in Boeing Service Bulletin 747-25-3279, Revision 1, dated July 11, 2002: Within 36 months after the effective date of this AD, do the actions specified in paragraphs (f)(1) and (f)(2) of this AD, as applicable, in accordance with Boeing Service Bulletin 747-25-3279, Revision 1, dated July 11, 2002.
(1) Modify the inflation systems of the upper deck and two-piece off-wing escape slides.
(2) Modify the inflation systems of the door 1, 2, 4, and 5 escape slides/rafts, as applicable.
Note 1: Boeing Service Bulletin 747-25-3279 refers to Goodrich Service Bulletin 4A3037-25-327, dated November 30, 2001; Goodrich Service Bulletin 4A3056-25-331, dated December 21, 2001; and Goodrich Service Bulletin 4A3221-25-332, dated December 21, 2001; as additional sources of service information for doing the modifications.
(g) For Model 747-200B, -200C, -300, -400, and -400D series airplanes identified in Boeing Service Bulletin 747-25-3232, dated July 6, 2000: Within 36 months after the effective date of this AD, modify the inflation system of the single-piece off-wing escape ramps/slides, in accordance with Boeing Service Bulletin 747-25-3232, dated July 6, 2000.
Note 2: Boeing Service Bulletin 747-25-3232 refers to Goodrich Service Bulletin 4A3416-25-305, Revision 2, dated October 15, 2001, as an additional source of service information for doing the modification.
(h) As of the effective date of this AD, unless the regulator assembly of the inflation system has been modified in accordance with paragraph (f) or (g) of this AD, as applicable, no person may install on any airplane a regulator assembly with any of the following part numbers (P/Ns): P/N 4A3047, -2, -3, -4, -5, -8, -9, or -10; P/N 4A3194-1, -2, -3, or -4; or P/N 4A3474-3.
(i) Actions done before the effective date of this AD in accordance with Boeing Service Bulletin 747-25-3279, dated May 16, 2002, are acceptable for compliance with the corresponding requirements of paragraph (f) of this AD.
(j) The Manager, Seattle Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19.
(k) You must use Boeing Service Bulletin 747-25-3279, Revision 1, dated July 11, 2002; and Boeing Service Bulletin 747-25-3232, dated July 6, 2000; as applicable, 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 these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207, 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.
