What was found
PREVIOUS TO DISPATCH OF FLIGHT THE PILOT REPORTED TERRAIN ON NAVIGATION DISPLAY WAS SELECTED ON ACCORDING WITH OPERATIONAL PROCEDURE OF MEL 24-48-01, TERRAIN ON ND DISPLAY WAS INOPERATIVE IN THAT CONFIGURATION. DUE SUCH SITUATION THE ACFT WAS HELD ON GND FOR MX. IT WAS PERFORMED A FAULT ANALYSIS IAW TSM 34-42-00-810-801-A & REPLACED THE RADIO ALTIMETER TRANSCEIVER NR 1 IAW AMM 34-42-33 PB401, PERFORMED THE OPERATIONAL TEST IAW AMM 34-42-00-740-002 & LAND CAT II & III CAPABILITY TEST IAW AMM 22-97-00-710-001 WITH NORMAL RESULTS. ADDITIONALLY PERFORMED BITE TEST OF THE GPWS IAW AMM 34-48-00-740-002-B WITH NORMAL RESULTS. AFTER THOSE MX ACTIONS THE ACFT WAS RETURNED TO SERVICE.