AD 95-16-06 Airworthiness Directives; Jetstream Aircraft Limited HP137 Mk1 and Jetstream Series 200 Airplanes

HP137 Mk1 and Jetstream series 200 airplanes (all serial numbers), 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 (d) of this AD to request approval from the FAA. This approval may address either no action, if the current configuration eliminates the unsafe condition, or different 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 after the effective date of this AD, unless already accomplished. To prevent wing damage caused by cracks or loose or damaged rivets in the wing lower skin panels, which, if not detected and corrected, could result in structural damage to the point of failure, accomplish the following: (a) Upon the accumulation of 6,500 hours time-in-service (TIS) or within the next 100 hours TIS after the effective date of this AD, whichever occurs later, unless already accomplished (compliance with superseded AD 83-05-01), and thereafter at intervals not to exceed 100 hours TIS until the modifications required by paragraphs (b)(1) and (b)(2) of this AD are incorporated, accomplish the following: (1) Inspect the wing lower skin between Wing Station (WS) 60 and WS 115 for loose or damaged rivets or cracks in accordance with section 3. ACTION, paragraphs (a) [[Page 39245]] through (e), of Jetstream Service Bulletin (SB) No. 7/3, dated October 1980. (2) Replace any loose or damaged rivets and repair any cracked wing lower skin panel in accordance with section 3. ACTION, paragraphs (f) through (k), of Jetstream SB No. 7/3, dated October 1980. (b) Upon the accumulation of 10,000 hours TIS or within the next 100 hours TIS after the effective date of this AD, whichever occurs later, accomplish the following: (1) Reinforce the wing lower skin at the landing gear bay cutouts at WS 115 in accordance with Jetstream SB 57-JM5221, dated September 28, 1984. This is referred to as Modification 5221. (2) Reinforce the wing lower skin at undercarriage bay cutouts between WS 60 and WS 90 in accordance with Part 2 of Modification No. 5146 Ref. 7/5146, dated October 1984. (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) An alternative method of compliance or adjustment of compliance time that provides an equivalent level of safety, may be approved by the Manager, Brussels Aircraft Certification Office (ACO), Europe, Africa, Middle East office, FAA, c/o American Embassy, B-1000 Brussels, Belgium. The request shall be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Brussels ACO. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Brussels Aircraft Certification Office. (e) The inspections and replacements required by this AD shall be done in accordance with Jetstream Service Bulletin No. 7/3, dated October 1980. The reinforcements required by this AD shall be done in accordance with Jetstream Service Bulletin 57-JM5221, dated September 28, 1984, or Modification No. 5146 Ref. 7/5146, dated October 1984, as applicable. 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 Limited, Manager, Product Support, Prestwick Airport, Ayrshire, KA9 2RW Scotland; telephone (44-292) 79888; facsimile (44-292) 79703; or Jetstream Aircraft Inc., Librarian, P.O. Box 16029, Dulles International Airport, Washington, D.C. 20041-6029; telephone (703) 406-1161; facsimile (703) 406-1469. Copies may be inspected at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri, or at the Office of the Federal Register, 800 North Capitol Street, NW., 7th Floor, suite 700, Washington, DC. (f) This amendment (39-9326) supersedes AD 83-05-01, Amendment 39-4573. (g) This amendment (39-9326) becomes effective on September 26, 1995. Issued in Kansas City, Missouri, on July 24, 1995. Henry A. Armstrong, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 95-18712 Filed 8-1-95; 8:45 am] BILLING CODE 4910-13-U