As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: FLAP EXTENSION FAIL GOING FROM FLAP UP TO FLAP 1. FLAP ASSYMETRY; THE LEFT FLAP REMAINED AT 0; THE RIGHT FLAP STOPPED MIDWAY BETWEEN 0 AND 1. AIRCRAFT EMERGENCY LANDED SAFELY AT PHX. REMOVED AND REPLACED NUMBER 4 INBOARD FLAP SKEW SENSOR. PER AMM 27-59-01. ACCOMPLISHED ALL REQUIRED TEST. NO HARD FAULTS AT THIS TIME.