As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE APPROACH, THE FLAP STOPPED WORKING AT POSITION 20. EXECUTED A GO AROUND APPROACH TO THE HOLDING FIX. WHILE IN THE HOLD, REFERENCED THE QRH, PARTIAL FLAPS CHECKLIST. ELECTED TO GO TO OUR FILES ALTERNATE. DECLARED AN EMERGENCY AND DIVERTED TO ANOTHER AIRPORT. WE LANDED WITH NO ISSUES.