What was found
FLAP FAIL CAUTION ON APPROACH INTO BOI. FOLLOWED QRH. LANDED SUCCESSFULLY. (FLIGHT 5290 - FILED CLOSED) THIS DISCREPANCY WAS TRANSFERRED TO CAMP ITEM 30793789 WITH THE FOLLOWING CORRECTIVE ACTION: "TROUBLESHOT FLAP FAIL CAUTION MESSAGE. FOUND FAULT CODE 27512012ACE TO BE FLAGGED AND FLAPS PARTIALLY EXTENDED. CLEARED FLAP ACE 1 AND 2 INHIBITS TO RETRACT FLAPS TO ZERO. AFTER INHIBITS CLEARED FLAP LO RATE MESSAGE POPULATED FLAGGING FAULT CODE 27532003ACE. FLAP LO RATE WOULD NOT CLEAR. FLAP STATUS PAGE IN CMC SHOWED L FLAP PSU RESOLVER IN NEGATIVE AND ABOUT 3 DEGREES OFF FROM R FLAP RESOLVER. TROUBLESHOT PER FIM 27-53-00-810-815-A. PER FIM SUSPECT L FLAP PSU TO BE AT FAULT. REMOVED AND REPLACED L FLAP PSU IAW AMM 27-53-04. AFTER RIGGING FLAP LO RATE CLEARED. FLAP SYSTEM OPS CHECK MULTIPLE TIMES WITH NO FAULTS. OPS CHECK GOOD AT THIS TIME."