As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OUTBOARD LEFT AND OUTBOARD RIGHT DE-ICE BOOTS AND ENGINE INLET ON RIGHT SIDE WENT INOP WHEN ACTUATED. RETURNED TO LAX. PERFORMED FUNCTIONAL CHECK OF ALL EJECTOR VALVES AND CLEANED CANNON PLUGS ON DE-ICE MONITOR. ALL CHECKS GOOD AT THIS TIME.