AD 95-09-03 Airworthiness Directives; Jetstream Model 4101 Airplanes

Models named: 4101. Read the applicability below — it usually turns on serial or part numbers too.

Model 4101 airplanes, constructor numbers 41001 through 41046 inclusive, and 41048 through 41052 inclusive; having either landing gear control unit part number 717701-1 or 717701 modification A; certificated in any category. 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 use the authority provided in paragraph (b) to request approval from the FAA. This approval may address either no action, if the current configuration eliminates the unsafe condition; or different [[Page 28037]] actions necessary to address the unsafe condition described in this AD. Such a request should include an assessment of the effect of the changed configuration on the unsafe condition addressed by this AD. In no case does the presence of any modification, alteration, or repair remove any airplane from the applicability of this AD.

Required as indicated, unless accomplished previously. To prevent uncommanded retraction of the landing gear, which can adversely affect airplane controllability, accomplish the following: (a) Within 8 hours time-in-service after the effective date of this AD, perform an inspection to determine the number of hours time-in-service on the landing gear control unit, in accordance with Jetstream Alert Service Bulletin J41-A32-042, dated April 13, 1995. (1) For those airplanes on which the control unit has accumulated less than 200 hours time-in-service: Prior to further flight, modify the cable (electrical wiring circuit) of the landing gear control unit in accordance with the alert service bulletin. (2) For those airplanes on which the control unit has accumulated 200 hours or more time-in-service: Within 50 hours time- in-service or within 7 days after the effective date of this AD, whichever occurs earlier, modify the cable (electrical wiring circuit) of the landing gear control unit in accordance with the alert service bulletin. (b) 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, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standardization Branch, ANM-113. (c) 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. (d) The inspection and modification shall be done in accordance with Jetstream Alert Service Bulletin J41-A32-042, dated April 13, 1995. 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 Jetstream Aircraft, Inc., P.O. Box 16029, Dulles International Airport, Washington, DC 20041-6029. 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. (e) This amendment becomes effective on June 14, 1995, to all persons except those persons to whom it was made immediately effective by priority letter AD 95-09-03, issued April 18, 1995, which contained the requirements of this amendment. Issued in Renton, Washington, on May 18, 1995. Darrell M. Pederson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 95-12711 Filed 5-26-95; 8:45 am] BILLING CODE 4910-13-U