88-02-02 GLASER-DIRKS FLUGZEUGBAU GmbH: Amendment 39-5814. Applies to Model DG-400 motor gliders, work numbers 4-1 thru 4-188, certificated in any category.
Compliance is required as indicated unless already accomplished. To prevent damage to the drive pinion gears on the spindle motor that operates the engine extension/retraction mechanism, which could result in the inability to obtain power in flight, accomplish the following:
(a) Within the next 10 hours' time in service after the effective date of this AD accomplish the following in accordance with the procedures specified in Glaser-Dirks Technical Note TN 826/18; dated March 10, 1987:
(1) Replace pages in the aircraft handbook Flight and Maintenance Manuals in accordance with Procedure 1.
(2) Check the engine extension time in accordance with Procedures 2 and 3. If this extension time exceeds 13 seconds: Within 25 hours time in service after the effective date of this AD, or 90 days, whichever comes first, replace the gas strut with Type 10-02-250-600/1200-N in accordance with Procedure 3 (procedures described on Page 41 of the Maintenance Manual). If extension time is 13 seconds or less, proceed to paragraph (b).
NOTE: Replacement of pages in the aircraft handbook Flight and Maintenance Manuals and the check of the engine extension time may be accomplished by the pilot.
(b) Within 25 hours time in service after the effective date of this AD, or 90 days, whichever comes first, modify the spindle drive in accordance with Procedure 4 of Glaser-Dirks Technical Note TN 826/18 (detailed procedures are described in Glaser-Dirks Service Instruction 1/10/86 dated March 10, 1987). This action must be accomplished regardless of whether the gas strut requires replacement.
(c) Aircraft may be ferried in accordance with FAR Section 21.197 and Section 21.199 to a base where the AD can be accomplished.
(d) Upon request, an equivalent means of compliance with the requirementsof this AD may be approved by the Manager, Brussels Aircraft Certification Office, Europe, Africa, and Middle East Office, Federal Aviation Administration, c/o American Embassy, 15 Rue de la Loi B-1040, Brussels, Belgium; telephone 513.38.30 ext. 2710, or the Manager, New York Aircraft Certification Office, Federal Aviation Administration, New England Region, 181 S. Franklin Avenue, Room 202, Valley Stream, New York 11581; telephone (516) 791-6690.
(e) 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.
Glaser-Dirks Technical Note TN 826/18, and Service Instruction 1/10/86, each dated March 10, 1987, 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 havenot already received these documents from the manufacturer may obtain copies upon request to Glaser-Dirks Flugzeugbau GmbH, Im Schollongarton 19-20, D-7520 Bruchsal 4, Federal Republic of Germany. These documents may also be examined at the Office of the Regional Counsel, Rules Docket No. 87-ANE-33, Room 311, Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803, between the hours of 8:00 a.m. and 4:30 p.m., Monday through Friday, except federal holidays.
This amendment becomes effective on January 22, 1988.