AD 88-25-01

88-25-01 BENDIX/KING: Amendment 39-6073. Applies to Model KDM 7000B Distance Measuring Equipment (DME), Part Number 066-1019-21/-23/-26/-33/-43/-57, (Serial Numbers 21855 through and including 22526) certificated to the applicable requirements of Technical Standard Order C66a, installed in, but not limited to, Boeing 727 series, 737 series, 747 series, British Aerospace Model 146, Fokker Models F-27 and F-28, and McDonnell Douglas MD-80 series airplanes.

Compliance: Required as indicated in the body of the AD, unless already accomplished.

To prevent uncommanded channeling of the associated VOR/Localizer/Glideslope navigation receiver and resultant erroneous navigation data with no warning information, accomplish the following:

(a) For affected KDM 7000B distance measuring equipment units, prior to installation in an aircraft, or if already installed in an aircraft, within the next 50 hours time-in-service following the effective date of this AD, modify the KDM 7000B DME in accordance with the instructions contained in Bendix/King Alert Service Bulletin KDM 7000B-34-14, dated November 4, 1988. This modification must be accomplished by a properly rated certified repair station.

(b) Airplanes may be flown in accordance with Federal Aviation Regulation 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, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209.

All persons affected by this directive may obtain copies of the document referred to herein upon request to Allied-Signal Aerospace Sector, Bendix/King Air Transport Avionics Division, P.O. Box 9327, Ft. Lauderdale, Florida 33310; or may examine the document referred to herein at the FAA, Office of the Assistant Chief Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106.

This amendment, 39-6073, becomes effective on December 20, 1988.