What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: FLAPS DID NOT EXTEND TO 30 WHEN SELECTED. AIRCRAFT DIVERTED AND LANDED SAFELY AT LCH WITHOUT FURTHER INCIDENT. TROUBLESHOOT PER FIM 27-51-00-810-803. ALL TESTING SHOWS PROPER OPERATION AND NO FAULTS INDICATED. RAN FSEU BITE TEST TO SHOW NO FAULTS AND THE A/C IS OPERABLE. RAN THE FLAPS FROM 0 TO 40 MULTIPLE TIMES NO RESULTS OF ERROR, BINDING, OR LACK OF INDICATIONS ON THE FLAP AND SLAT INDICATOR. NO FAULT FOUND.