What was found
DURING DESCENT & UNTIL TAXI PHASE OF THE ACFT AS FLIGHT TAI-570, THE PILOT REPORTED THAT THE 3 COCKPIT OCCUPANTS SMELLED A HEAVY & INTERMITTENT BURN RUBBER LIKE ODOR IN THE COCKPIT. AFTER LANDING, MX PERSONNEL PROCEEDED TO IDENTIFY THE CAUSE OF CABIN ODORS OR SMOKE IAW TSM 05-50-00-810-831-A. FOUND DAMAGED BOTH THE EXTRACT & THE BLOWER FANS OF THE AVIONIC EQUIPMENT VENTILATION. THE DAMAGED FANS WERE REPLACED & OPERATIONAL TEST OF THE VENTILATION SYS OF THE AVIONICS EQUIPMENT PERFORMED IAW AMM 21-26-51 PB 401 WITH NO FAULT MSGS. AFTER COMPLETING THE DESCRIBED MX ACTIONS, THE ACFT WAS RETURNED TO SERVICE.