Airworthiness directives › 98-06-09
AD 98-06-09 Airworthiness Directives; British Aerospace Model HS 748 Series Airplanes
Models named: HS 748 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
All Model HS 748 series airplanes, 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 request approval for an alternative method of compliance in accordance with paragraph (b) 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 detect and correct fatigue cracking in the flanges of the aileron operating arm bracket, which could result in failure of the aileron operating arm bracket, failure of the aileron control system, and consequent reduced controllability of the airplane, accomplish the following: (a) Within 1,000 hours time-in-service or 6 months after the effective date of this AD, whichever occurs first, perform a visual inspection for fatigue cracking and for loose or poorly fitting stress pads on each aileron operating arm bracket, in accordance with Jetstream Service Bulletin HS748-27-124, dated November 17, 1995. (1) If no crack is detected during the inspection required by paragraph (a) of this AD, and the stress pads are positioned to ensure a snug fit into the heel of the attach flange, no further action is required by this AD. (2) If no crack is detected during the inspection required by paragraph (a) of this AD, but any stress pad is either loose or poorly positioned, repeat the visual inspection thereafter at intervals not to exceed 1,000 hours time-in-service or 6 months, whichever occurs first, up to a maximum of 4,000 hours time-in- service or 24 months, whichever occurs first, at which time the aileron operating arm bracket and stress pads must be replaced with new or serviceable parts in accordance with the service bulletin. (3) If any crack is detected during the inspection required by paragraph (a) of this AD, prior to further flight, accomplish the action specified in either paragraph (a)(3)(i) or (a)(3)(ii) of this AD, in accordance with the service bulletin. (i) Replace the aileron operating arm bracket and stress pads with new or serviceable parts. No further action is required by this AD. (ii) Temporarily repair the aileron operating arm bracket. Within 1,000 hours time-in-service after accomplishment of this repair, replace the aileron operating arm bracket and stress pads with new or serviceable parts. No further action is required by this AD. (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, International Branch, ANM-116, 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, International Branch, ANM-116. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the International Branch, ANM-116. (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 actions shall be done in accordance with Jetstream Service Bulletin HS748-27-124, dated November 17, 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 AI(R) [[Page 12407]] American Support, Inc., 13850 Mclearen Road, Herndon, Virginia 20171. 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. Note 3: The subject of this AD is addressed in the British airworthiness directive 007-11-95. (e) This amendment becomes effective on March 30, 1998. Issued in Renton, Washington, on March 5, 1998. Darrell M. Pederson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 98-6331 Filed 3-12-98; 8:45 am] BILLING CODE 4910-13-P
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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