As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) RADIO ALTIMETER TRANSCEIVER INTERMITTENT OPERATION. INVESTIGATION FOUND THE FAULT WAS DUE TO A STRAY VOLTAGE ON A SPARE PIN IN THETRANSCEIVER DUE TO A WIRE FITTED BY A PREVIOUS OPERATOR. THEMODIFICATION WAS NOT NOTIFIED TO THE MANUFACTURER AND THE WIRINGDIAGRAMS WERE NOT AMENDED. PERSONNEL/MAINTENANCE ERROR.