85-19-06 BURKHART GROB: Amendment 39-5131. Applies to model G102 Astir CS Gliders (serial numbers 1001 through 1536 inclusive) certificated in any category.
Compliance is required as indicated unless already accomplished.
To Prevent failure of the air brake locking levers, accomplish the following:
(a) Within the next 10 hours time in service after the effective date of this AD cut inspection holes in the wing root ribs and inspect the air brake levers (P/Ns 102-4123 and 102- 4124) in accordance with Instruction 1 of Grob-Werke Technical Information TM 306-26, dated March 25, 1985.
(b) If solid cast aluminum levers are found, accomplish paragraph (d).
(c) If cast aluminum levers with a centerhole are found, accomplish the following:
(1) Install inspection windows in the wing and replace page 3 and add page 26a to the flight manual in accordance with Instruction 2 of Grob-Werke Technical Information TM 306-26, dated March 25, 1985, no later than March 31, 1986.
(2) Within the next 10 hours time in service after the effective date of this AD and thereafter at intervals not to exceed 10 hours, inspect the airbrake locking levers for cracks in accordance with Instruction 3 of Grob-Werke Technical Information TM 306-26, dated March 25, 1985, until accomplishment of Instruction 4 of Grob-Werke Technical Information TM 306-26, dated March 25, 1985. If cracks are found, replace airbrake locking lever with a serviceable part before further flight.
(d) Replace the cast aluminum airbrake levers with the sheet aluminum airbrake levers in accordance with Instruction 4 of Grob-Werke Technical Information TM 306-26, dated March 25, 1985, no later than 3000 hours time in service.
NOTE: Dimensions shown in TM 306-26 are in millimeters.
Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Aircraft Certification Office, AEU-100, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, Brussels, Belgium 09667-1011, telephone 513.38.30.
Upon submission of substantiating data by an owner or operator through an FAA maintenance inspector, the Manager, Brussels Aircraft Certification Office may adjust the compliance time specified in this AD.
Grob-Werke GmbH Technical Information TM 306-26 dated March 25, 1985, is incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received this document from the manufacturer may obtain copies upon request to Burkhart Grob of America Incorporated, 1070 Navajo Drive, Bluffton Airport Complex, Bluffton, Ohio 45817. These documents also may be examined at the Office of the Regional Counsel, FAA, New England Region, Room 311, 12 New England Executive Park, Burlington, Massachusetts 01803.
This amendment becomes effective on September 19, 1985.