What was found
FLAPS FAIL AMBER CAS: DURING CRUISE CLIMB FROM FL390-FL400 AMBER FLAPS FAIL CAS MESSAGE ILLUMINATED. WHILE PERFORMING FLAP FAIL QRC MESSAGE DID NOT CLEAR AFTER PRESSING FLAP RESET BUTTON. CORRECTIVE ACTION: REMOVED RH FLAP POSITION SENSOR, PN: 9914510-4, SN: A4199 AND INSTALLED MODIAED SENSOR, PN: 9914510-5, SN: A4304 IAW CE6B0A AMM 27-50-01. OPS CHECKS GOOD.