As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB FROM SAL TO MGA THE AIRCRAFT RETURNED TO SAL DUE TO VENT AVNCS SYS FAULT + VENT BLOWER FAULT + VENT EXTRACT FAULT AT SAL STATION WAS PERFORMED TSM 21-26-00-820-803A, WAS REMOVED AND REPLACED AEVC AVIONICS EQPT VENT COMPUTER (10HQ) IAW AMM 21-26-34, AND WAS PERFOMED THE OPS TEST IAW AMM 21-26-00-710-001-A, ALL NORMAL. THE AIRCRAFT WAS RETURNED TO NORMAL OPERATION.