What was found
RIGHT "PACK" LIGHT ILLUMINATED ON OVERHEAD PANEL DURING MASTER CAUTION RECALL. PACK LIGHT RESET INDICATING SINGLE CONTROLLER FAIL. GROUNDED - YES. REF TSR 701842, BITE CHECK OF RIGHT PZTC LOGGED "SRADA EXIT" ON PREV FLT. NO FAULTS ON LEFT PZTC. REPLACED RIGHT RAM AIR EXHAUST ACTUATOR. ADJUSTMENT CHECK OF RIGHT RAM AIR EXHAUST ACTUATOR OK REF AMM 21-51-27-400-801. EXHAUST ACTUATOR INSTALLATION TEST PASSES REF AMM 21-51-27-400-801. ACCOMPLISHED BITE OF BOTH PZTCS. BOTH PASS VERIFY WITH "GO" REF FIM 21-62 TASK 801. AIRCRAFT RELEASED FROM MEL 21-5D.