What was found
D: L REV UNLOCKED AT FL 280C; MEL 78-30-1XCAT: C DUE 04/08/23L REV UNLOCKED AT FL 280 PERFORMED QRC/QRH (FLIGHT 4230 FILED CLOSED)MAR 29, 2023 STATION: SLC--DEFERRED LEFT ENGINE THRUST REVERSER PER MEL 78-30-1, MX ACTION COMPLIED WITH DEACTIVATED LEFT THRUST REVERSER PER AMM TASK 78-30-00-040-802, AND VERIFIED NO ASSOCIATED CAUTION OR WARNING MSG'S SHOWN AND NO THRUST REVERSER DAMAGE NOTED, PLACARD INSTALLED. MAR 30, 2023 STATION: SLC -- UNDEFERRED THE LH THRUST REVERSER IN REFERENCE TO AMM 78-30-00 VERIFIED THE RIG OF THE LH STOW, DEPLOY AND THROTTLE LOCKOUT MICROSWITCHES. FOUND THE LH STOW SWITCH OUT OF RIG. RIGGED LH STOW SWITCH IN REFERENCE TO AMM 78-37-01. OPS CHECK GOOD AT THIS TIME. PLACARDS REMOVED.RESEALED THE SPARE BULB KIT AS NECESSARY.