AD 97-24-07 Airworthiness Directives; Jetstream Aircraft Limited Jetstream Models 3101 and 3201 Airplanes

Models named: 3101, 3201. Read the applicability below — it usually turns on serial or part numbers too.

Model 3101 and 3201 airplanes, serial numbers 693 through 870, certificated in any category, that have kit JK 2496 and modification JM 7537 installed. 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 (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.

Required within the next 100 hours time-in-service (TIS) after the effective date of this AD, unless already accomplished. To prevent loss of the airplane's internal power connection to the auto-ignition system, which could cause loss of engine power and possible loss of the airplane, accomplish the following: (a) Install magnetically latching relays with wiring changes (quantity 2) in accordance with the ACCOMPLISHMENT INSTRUCTIONS section of Jetstream Service Bulletin (SB) No. 74-JM 7693A, Original Issue dated May 17, 1990; Revision 3, dated January 28, 1993. (b) 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. (c) An alternative method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager, Small Airplane Directorate, 1201 Walnut, suite 900, Kansas City, Missouri, 64106. The request shall be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Small Airplane Directorate. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from Small Airplane Directorate. (d) The installation required by this AD shall be done in accordance with BAe JETSTREAM Service Bulletin No. 74-JM 7693A, ORIGINAL ISSUE: May 17, 1990; REVISION NO. 3, dated January 28, 1993. 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 of this document may be obtained from Jetstream Aircraft Limited, Prestwick Airport, Ayrshire, KA9 2RW, Scotland, or may be inspected at the FAA, Central Region, Office of the Regional Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri, or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. Note 3: The subject of this AD addresses the United Kingdom's Civil Airworthiness Authority Mandatory BAe JETSTREAM Service Bulletin No. 74-JM 7693A, ORIGINAL ISSUE: May 17, 1990; REVISION NO. 3, dated January 28, 1993. (e) This amendment (39-10214) becomes effective on December 31, 1997. Issued in Kansas City, Missouri, on November 14, 1997. Mary Ellen A. Schutt, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 97-30712 Filed 11-21-97; 8:45 am] BILLING CODE 4910-13-U