What was found
DURING APPROACH, FLAP MOVE VERY SLOW FROM 15 DEGREES TO 30 DEGREES, EXT FLAG STAYED ON. FEW SECONDS AFTER REACHING 30 DEGREES, RECEIVED WARNING FLAP UNLOCK ON CAP EXECUTED GO AROUND FOLLOWED AOM PROCEDURES AND LANDED WITH FLAPS 15 DEGREES. "EMERGENCY DECLARED" -REPEAT WRITE UP- R & R FLAP VALVE BLOCK IAW ATR-72 JIC 27-54-71.OPS CHECK AND LEAK CHECK FOUND SATISFACTORY AT THIS TIME. ACFT WILL BE RELEASED FOR FCF RII: 148806. FCF PASSED, AML 298284-1.