What was found
FLIGHT #5285. DURING TAXI OUT RECEIVED A LEFT SPOILER CAUTION MESSAGE, AIRCRAFT RETURNED TO THE GATE.REPLACED THE LEFT INBOARD FLIGHT SPOILER POWER CONTROL UNIT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT #5285. DURING TAXI OUT RECEIVED A LEFT SPOILER CAUTION MESSAGE, AIRCRAFT RETURNED TO THE GATE.REPLACED THE LEFT INBOARD FLIGHT SPOILER POWER CONTROL UNIT.