What was found
(CAN) RT ENGINE UNCONTROLLED ACCELERATION AFTER 10 MINS AT CRUISE ALT 39,000 DESCENDED DOWN TO 21,000 ENGINE OK HAD CONTROL.CHANGED (1) FCU, P/N 3076800-8 S/N ON A3538PT/OFF A 4778T(2) PT2 SENSOR P/N 3070816-4 (3) ENGINE COMPUTER P/N 949572-8 S/N ON 94-576/OFF 15-415 (4) NZ SENSOR P/N 307022-3. LT ENGINE GROUND CHECKED OK TEST FLIGHT CARRIED OUT TO 395 NO PROBLEMS. ENGINE PERFORMED OK NOTE: ENGINES ARE LOANERS FROM BIZJET (918-832-7733).