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99-03-01 SCHEMPP-HIRTH K.G.: Amendment 39-11013; Docket No. 98-CE-52-AD.
Applicability: The following sailplane models and serial numbers, certificated in any category:
Models
Serial Numbers
Standard Cirrus
573, 586, 593, 595, 597 through 599, 601 through
701
Nimbus-2
86, 93, and 96 through 116, 118 through 129, 131,
and 176
JANUS
1 through 55, and 59
Mini-Nimbus HS-7
1 through 60, and 65
NOTE 1: Both Schempp-Hirth Technical Note No. 278-36, 286-33, 295-26, 328-11, 798-3, dated November 11, 1994, and German AD 95-015, dated December 15, 1994, apply to the Model Nimbus-2M sailplanes. This sailplane model is not type certificated for operation in the United States, and therefore is not covered by the applicability of this AD. The Model Nimbus-2M sailplanes could be operating in the United States with an experimental certificate. The FAA recommends that any person operating a Model Nimbus-2M sailplane in the United States with an experimental certificate accomplish the actions specified in the technical note.
NOTE 2: 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 the locking hook on the tailplane attachment bracket from disengaging, which could result in the horizontal tailplane coming loose from the fin with possible loss of longitudinal control of the sailplane, accomplish the following:
(a) Install a safety device for the tailplane locking hook in accordance with Schempp-Hirth Appendix to Technical Note No. 278-36, 286-33, 295-26, 328-11, 798-3, dated November 11, 1994.
(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 3: 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 the service information referenced in this document should be directed to Schempp-Hirth Flugzeugbau GmbH, Postbox 14 43, D-73222 Kirchheim unter Teck, 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 installation required by this AD shall be done in accordance with Schempp-Hirth Appendix to Technical Note No. 278-36, 286-33, 295-26, 328-11, 798-3, dated November 11, 1994. 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 Schempp-Hirth Flugzeugbau GmbH, Postbox 14 43, D-73222 Kirchheim unter Teck, 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 4: The subject of this AD is addressed in German AD 95-015, dated December 15, 1994.
(f) This amendment becomes effective on March 12, 1999.
