89-04-04: Center of Gravity Station Guide Line

89-04-04 DORNIER: Amendment 39-6139. Applicability: Model Do-28 D-1 (all serial numbers) airplanes certificated in any category. Compliance: Required within the next 50 hours time-in-service after the effective date of this AD, unless already accomplished. To preclude operation of the airplane beyond the approved forward or rear center of gravity limits, accomplish the following: A. Inspect the installed Center of Gravity Station Guide Line in accordance with Dornier Service Bulletin No. 1121-1703, dated May 20, 1988, and determine its location. Prior to further flight, replace, and correctly locate the Guide Line if necessary. B. Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. C. An equivalent means of compliance with this AD may be used if approved by the Manager, Aircraft Certification Office, AEU-100, Europe, Africa, and Middle East Office, FAA, c/o American Embassy, B-1000 Brussels, Belgium.All persons affected by this directive may obtain copies of the document referred to herein upon request to the Aircraft Certification Office, AEU-100, Europe, Africa, and Middle East Office, FAA, c/o American Embassy, B-1000 Brussels, Belgium; or may examine this document at the FAA, Office of the Assistant Chief Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This amendment (39-6139, AD 89-04-04) becomes effective on March 10, 1989.