What was found
ON DEPARTURE FROM KEGE WHEN SELECTING THE FLAPS FROM 1TO 0 WE RECIEVED A FLAPS FAIL CAS AND THE FLAPS REMAINED AT 1. AIRSPEED WAS MAINTAINED BELOW 180 KNOTS AND MAXIMUM ALTITUDE WAS 17000'. THE QRH WAS UNABLE TO RESOLVE THE CONDITION. NORMAL LANDING FOLLOWED AT 16,100 LBS. ( EMERGENCY DECLARED ) INSTALLED CUSTOMER SUPPLIED REPAIRED FLAP SELECT LEVER P/N 780501-9 S/N 3273 IAW PH300 AMM 27-53-01 AND ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK. REF PH300 AMM 27-50-00-710-801A. UNIT REMOVED P/N 780501-9 S/N 1827.