Airworthiness directives › 99-23-24
AD 99-23-24 Airworthiness Directives; AlliedSignal, Instrument Landing System Navigation Receivers, as Installed in, but Not Limited to, Airbus Model A300 Series Airplanes and Boeing Model 747-100, -100B, -100B SUD, - 200B, -200F, -200C, -300, 747SR, and 747SP Series Airplanes
Models named: A300 series, 747-100, -100B, -100B SUD, -200B, -200F, -200C, -300, 747SR, 747SP series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
RIA-32A instrument landing system (ILS) navigation receivers having part numbers (P/N) 2070724-3201 and 3203; as installed in, but not limited to, Airbus Model A300 series airplanes and Boeing Model 747-100, -100B, -100B SUD, -200B, -200F, -200C, -300, 747SR, and 747SP series airplanes; certificated in any category. Note 1: This AD applies to AlliedSignal RIA-32A ILS navigation receivers having P/ [[Page 63176]] N 2070724-3201 and -3203, as installed on any airplane, regardless of whether the airplane 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 (c) 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.
Compliance
Required as indicated, unless accomplished previously. To ensure the ILS receiver provides the flight crew with accurate glideslope data, accomplish the following: Replacement (a) For ILS navigation receivers having serial numbers 1 through 2365 inclusive: Within 6 months after the effective date of this AD, replace three resistors in the ILS navigation receiver with higher ohm resistors in accordance with Bendix/King Service Bulletin RIA- 32A-34-47, Revision 1, dated January 1992; and replace the nameplate on the receiver with a new nameplate in accordance with Bendix/King Service Bulletin RIA-32A-34-48, dated December 1991. (b) For ILS navigation receivers having serial numbers 2366 and subsequent: Within 6 months after the effective date of this AD, replace the nameplate on the receiver with a new nameplate in accordance with Bendix/King Service Bulletin RIA-32A-34-48, dated December 1991. Alternative Methods of Compliance (c) 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, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Avionics Inspector, who may add comments and then send it to the Manager, Seattle ACO. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Seattle ACO. Special Flight Permits (d) 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 (e) The replacements shall be done in accordance with Bendix/ King Service Bulletin RIA-32A-34-47, Revision 1, dated January 1992; and Bendix/King Service Bulletin RIA-32A-34-48, dated December 1991. 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 AlliedSignal Aerospace, Technical Publications, Dept. 65-70, P.O. Box 52170, Phoenix, Arizona 85072- 2170. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (f) This amendment becomes effective on December 6, 1999. Issued in Renton, Washington, on November 5, 1999. D.L. Riggin, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 99-29739 Filed 11-18-99; 8:45 am] BILLING CODE 4910-13-P
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1