Airworthiness directives › 98-15-24
AD 98-15-24 Airworthiness Directives; Stemme GmbH & Co. KG Model S10-V Sailplanes
Applicability*9
Model S10-V sailplanes (serial numbers (S/N) 14- 002 through 14-026, and converted sailplanes S/N 14-003M through 14- 063M), 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 upon the accumulation of 100 hours total time-in-service (TIS) on the sailplane propeller or within the next 10 hours TIS after the effective date of this AD, whichever occurs later, unless already accomplished. To prevent propeller suspension fork failure caused by design deficiency, which could result in loss of a propeller blade and loss of sailplane controllability, accomplish the following: [[Page 39485]] (a) Replace the following in accordance with pages 3 and 4 of Stemme GmbH & Co. KG Service Bulletin No. 31-10-020, Am-index: 02.a, dated October 7, 1996: (1) The propeller blade suspension fork, part number (P/N) 0AP- V08 (or an FAA-approved equivalent P/N), with a new propeller blade suspension fork, P/N A09-10AP-V08 (or an FAA-approved equivalent P/ N); (2) The propeller blade suspension fork distance ring, P/N 10AP- V05 (or an FAA-approved equivalent P/N), with a new propeller fork distance ring, P/N A09-10AP-V05 (or an FAA-approved equivalent P/N); and (3) The propeller blade suspension fork nut, P/N 10AP-V06 (or an FAA-approved equivalent P/N), with a new propeller blade suspension fork nut, P/N A09-10AP-V06 (or an FAA-approved equivalent part number). (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, FAA, 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 the Small Airplane Directorate. (d) Questions or technical information related to pages 3 and 4 of Stemme GmbH & Co. KG Service Bulletin No. A31-10-020, Am-index: 02.a, dated October 7, 1996, should be directed to Stemme GmbH & Co. KG, Gustav-Meyer-Allee 25, D-13355 Berlin, Federal Republic of Germany. 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 64106. (e) The replacements required by this AD shall be done in accordance with pages 3 and 4 of Stemme GmbH & Co. KG Service Bulletin No. A31-10-020, Am-index: 02.a, dated October 7, 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 Stemme GmbH & Co. KG, Gustav-Meyer- Allee 25, D-13355 Berlin, 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 3: The subject of this AD is addressed in German AD 95-177/ 2, dated January 30, 1997. (f) This amendment becomes effective on September 15, 1998. Issued in Kansas City, Missouri, on July 15, 1998. James E. Jackson, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 98-19459 Filed 7-22-98; 8:45 am] BILLING CODE 4910-13-P
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