Airworthiness directives › 98-06-38
AD 98-06-38 Airworthiness Directives; Alexander Schleicher Segelflugzeugbau Model ASK-21 Sailplanes
Applicability*9
Model ASK-21 sailplanes, serial numbers 21 001 through 21 205, certificated in any category, that do not have an automatic elevator connection installed in accordance with Alexander Schleicher Technical Note No. 11, dated December 20, 1983. 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 (d) 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 in the body of this AD, unless already accomplished. To prevent failure of the elevator pushrod caused by corrosion damage, which could result in loss of control of the sailplane, accomplish the following: (a) Within the next 3 calendar months after the effective date of this AD, drill a drainage hole in the elevator pushrod in accordance with Alexander Schleicher Technical Note No. 26, dated July 1, 1993. (b) Within the next 3 calendar months after the effective date of this AD, inspect the elevator pushrod for corrosion damage in accordance with Alexander Schleicher Technical Note No. 26, dated July 1, 1993. (1) If no corrosion damage is found or corrosion damage is found that does not exceed the amount specified in the service bulletin, prior to further flight after the inspection required by paragraph (b) of this AD, apply a corrosion agent as described in the service bulletin. (2) If corrosion damage is found that exceeds the amount specified in the service bulletin, prior to further flight after the inspection required by paragraph (b) of this AD, replace the elevator pushrod in accordance with the maintenance manual, and apply a corrosion agent as described in the service bulletin. (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 sailplane [[Page 13507]] to a location where the requirements of this AD can be accomplished. (d) An alternative method of compliance or adjustment of the compliance times 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. (e) Questions or technical information related to Alexander Schleicher Technical Note No. 26, dated July 1, 1993, should be directed to Alexander Schleicher Segelflugzeugbau, 6416 Poppenhausen, 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. (f) The inspection, drilling, and application required by this AD shall be done in accordance with Alexander Schleicher Technical Note No. 26, dated July 1, 1993. 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, 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 No. 93- 186, dated September 15, 1993. (g) This amendment (39-10417) becomes effective on April 28, 1998. Issued in Kansas City, Missouri, on March 11, 1998. Michael Gallagher, Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 98-7232 Filed 3-19-98; 8:45 am] BILLING CODE 4910-13-U
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