As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAPS EXTENDED NORMAL TO 25 FOR LANDING, BUT WHEN 30 WAS SELECTED, FLAPS LOCKED OUT AT 25. EXECUTED A GO AROUND & FLAPS REMAINED AT 25 EVEN THOUGH 15 WAS SELECTED. EMERGENCY DECLARED, LANDING UNEVENTFUL. A FLAP 25 LANDING WAS ACCOMPLISHED. FLAPS RETRACTED NORMAL TO ZERO. MAINTENANCE REPLACED RIGHT HAND FLAP POSITION TRANSMITTER IAW AMM 27-58-01.