86-18-09 GROB WERKE GMBH (BURKHART GROB): Amendment 39-5410. Applies to Model G103 TWIN ASTIR gliders serial numbers 3000 through 3291, and 3000-T-1 through 3284-T-44 certificated in any category.
Compliance is required as indicated unless already accomplished.
To prevent failure of the rudder control rear parallel lever P/N II 103-4320.05 which could result in loss of rudder control, accomplish the following:
(a) Within the next 10 hours time-in-service after the effective date of this AD, and thereafter at intervals not to exceed 10 hours time-in-service after the last inspection, until compliance with Paragraph (c) is accomplished, visually inspect the rear parallel lever in the area of the left and right boreholes, using a 10 power or greater magnifying glass, for cracks in accordance with Part 1 of the "Instructions" section of Grob Technical Information No. TM 315- 30, dated October 1, 1985.
(b) If a cracked lever is found during the inspection required by Paragraph (a) of this AD, before further flight, replace the rear parallel lever with a stronger new parallel lever in accordance with part 2 of the "Instructions" section of Grob Technical Information No. TM 315- 30, dated October 1, 1985, and Grob Repair Instructions No. 315-30, dated October 1, 1985.
(c) Within the next 30 hours time-in-service but no later than 60 days after the effective date of this AD, replace any rear parallel lever not replaced in accordance with Paragraph (b) of this AD, with a stronger rear parallel lever in accordance with Part 2 of the "Instructions" section of Grob Technical Information No. TM 315-30, dated October 1, 1985, and Grob Repair "Instructions" No. 315-30, dated October 1, 1985. NOTE: Stronger rear parallel lever does not have a new part number. It can be identified as it is made of stock aluminum, not a casting as the original part.
Upon request, an equivalent means of compliance with the requirements of this AD may be approvedby the Manager, Brussels Aircraft Certification Office, AEU-100, Europe, Africa, and Middle East Office, FAA, c/o American Embassy, 15 Rue de la Loi B-1040 Brussels, Belgium, Telephone No. 513.38.30 ext. 2710 or the Manager, New York Aircraft Certification Office, Aircraft Certification Division, FAA, New England Region, 181 South Franklin Avenue, Room 202, Valley Stream, New York 11581, Telephone No. 516-791-6680.
Upon submission of substantiating data by an owner or operator through an FAA maintenance inspector, the Manager, Brussels Aircraft Certification Office, or the Manager, New York Aircraft Certification Office, may adjust the compliance time specified in this AD.
Grob Technical Information No. 315-30 dated October 1, 1985, and Grob Repair Instructions No. 315-30 dated October 1, 1985, identified and described in this document, are 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 alreadyreceived these documents from the manufacturer may obtain copies upon request to Grob Systems, Inc., Aircraft Division, I-75 and Airport Drive, Bluffton, Ohio 45817. These documents also may be examined at the Office of Regional Counsel, ANE-7, FAA New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803, Room 311, Rules Docket 86-ANE-36, between the hours of 8:00 am and 4:30 pm; Monday thru Friday, except Federal holidays.
This amendment becomes effective on September 15, 1986.