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98-24-08 BURKHART GROB LUFT-UND RAUMFAHRT: Amendment 39-10894; Docket No. 98-CE-68-AD.
Applicability: Models G115, G115A, G115B, G115C, G115C2, G115D, and G115D2 airplanes, all serial numbers, 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 (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 structural damage of the trim tab hinges caused by cracks, which could result in trim tab failure with consequent loss of control of the airplane, accomplish the following:
(a) Within the next 50 hours time-in-service (TIS) after the effective date of this AD, inspect the area of the elevator trim tab hinges for cracks and a secure fit. Accomplish this inspection in accordance with the Action section of Grob Service Bulletin No. 1078-75, dated May 15, 1998.
(b) Prior to further flight, repair any elevator trim tab hinges with cracks or where a proper secure fit is not found. Accomplish these repairs in accordance with the Procedure section of Grob Installation Instructions No. 1078-75, dated May 15, 1998.
(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 locationwhere 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, 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 Grob Service Bulletin 1078-75, dated May 15, 1998, should be directed to Burkhart Grob Luft-und Raumfahrt, D-8939 Mattsies, 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.(f) The inspection required by this AD shall be done in accordance with Grob Service Bulletin 1078-75, dated May 15, 1998. The repair required by this AD shall be done in accordance with Grob Installation Instructions No. 1078-75, dated May 15, 1998. 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 Burkhart Grob Luft-und Raumfahrt, D-8939 Mattsies, 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 1998-299, dated June 4, 1998.
(g) This amendment becomes effective on December 28, 1998.
