Airworthiness directives › 98-09-09
AD 98-09-09 Airworthiness Directives; Alexander Schleicher GmbH Segelflugzeugbau Model ASH-26E Sailplanes
Applicability*9
Model ASH-26E sailplanes, all serial numbers, certificated in any category. Note 1: This AD applies to each sailplane 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 sailplanes 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 within the next 6 calendar months after the effective date of this AD, unless already accomplished. To prevent failure of the internal cooling system air fan caused by the impeller slipping, which could result in loss of compression and power and possible engine failure, accomplish the following: (a) Replace the internal cooling air fan with a fan that incorporates Modification Kit R1K555A in accordance with Mid-West Engines Ltd. Service Bulletin No. 001, dated October 5, 1996, as referenced in Alexander Schleicher Technical Note No. 1, dated October 31, 1996. Note 2: Modification Kit R1K555A includes the following provisions: --A positive lock between the fan and spindle; --A cable tie wrap for fan delivery duct sealing; and --A smaller driven pulley on the fan spindle. Note 3: Although not required by this AD, the FAA recommends accomplishing in-flight temperature checks of the internal cooling air fan during each flight until the modification required by paragraph (a) of this AD is incorporated. These in-flight temperature checks are specified in Alexander Schleicher Technical Note No. 1, dated October 31, 1996, and are required by German AD No. 97-009, dated January 30, 1997, for sailplanes on the German registry. (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 sailplane 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 4: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Small Airplane Directorate. (d) Questions or technical information related to Alexander Schleicher Technical Note No. 1, dated October 31, 1996; and Mid- West Engines Ltd. Service Bulletin No. 001, dated October 5, 1996, should be directed to Alexander Schleicher Segelflugzeugbau, 6416 Poppenhausen, Wasserkuppe, Federal Republic of Germany; telephone: 49.6658.890 or 49.6658.8920; facsimile: 49.6658.8923 or 49.6658.8940. This service information may be examined at the FAA, Central Region, Office of the Regional Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri. (e) The replacement and modification required by this AD shall be done in accordance with Mid-West Engines Ltd. Service Bulletin No. 001, dated October 5, 1996, as referenced in Alexander Schleicher Technical Note No. 1, dated October 31, 1996. 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 Alexander Schleicher Segelflugzeugbau, 6416 Poppenhausen, Wasserkuppe, Federal Republic of Germany. Copies 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 5: The subject of this AD is addressed in German AD No. 97- 009, dated January 30, 1997. (f) This amendment becomes effective on June 1, 1998. Issued in Kansas City, Missouri, on April 15, 1997. James E. Jackson, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 98-10593 Filed 4-23-98; 8:45 am] BILLING CODE 4910-13-U
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