As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE, AT FL300 "STAB MIS COMP" AND "HYD PRESS" ANNUNCIATORS ILLUMINATED. CONNECTED AIR DATA TEST SET AND PERFORMED FULL "TWO POSITION HORIZONTAL STAB OPERATIONAL CHECK" AND "AIRSPEED SWITCH AND HORIZONTAL STAB OPS CHECK" IAW CH 27-40-00 OF THE CE-560XL MM. NO DEFECTS NOTED. DISCONNECTED TEST EQUIPMENT.