What was found
WEATHER RADAR FAILURE. *S/D* REPLACED THE NR 1 INERTIAL REFERENCE UNIT, NR 2 ELECTRONIC FLIGHT INSTRUMENT SYSTEM SYMBOL GENERATOR, R283 AIR/GROUND RELAY, AUTOMATIC FLIGHT CONTROL SYSTEM ACCESSORY UNIT AND NR 1 & 2 INERTIAL REFERENCE SYSTEM TRANSFER RELAYS. ACCOMPLISHED RINGOUT OF IRS INPUTS TO THE WEATHER RADAR RECEIVER TRANSMITTER AND THE ELECTRONIC GROUND PROXIMITY WARNING SYSTEM, TAXIED AIRCRAFT, ALL SYSTEMS TEST NORMAL.PARTS REPLACED: IRU: HG1050AD05/AD04, AIR/GND RELAY: K-D4L036, EFIS SG: 622-9436-101, AFCS ACCY UNIT: 65-52820-2, NR 1 & 2 IRS TRANSFER RELAY: 172938-001.