What was found
SPLIT FLAP ON RETRACT AFTER TO RANGE NO OTHER FAULTS FOUND ON FSEU. PICTURE ATTACHED. PER PILOT VERBAGE FLAP STUCKED AT 2 WITH PERFORMED AMM TASK 27-59-00-730-801 FLAP SKEW DETECTION TEST . RETRACTED FLAPS ALTERNATELY. INDICATION SPLIT. ALSO THEY USED FLAP INHIBIT SWITCH. F4 SKEW SENSOR IS OUT OF TOLERANCE. 0 DEGREES READING 357.1, SHOUOLD 332.8-346.9, 1F DREES 169.9, SHOULD BE 147.3-164.6, 40 DEGREES 289.9, SHOULD BE 265.1-282.1. ALL OTHER SENSORS WITHIN REMOVED AND REPLACED #4 IB FLAP SKEW SENSOR AS PER MM 27-59-01-400-804. PERFORMED OPS CHECK AS PER 27-59-00-730-801. ALL OPS CHECKS NORMAL. ALL PARAMETERS WITHIN RANGE