What was found
PITCH TRIM 1-2 INOPERATIVE ON EICAS AT 520 FT SHORTLY AFTER DISCONNECTING AUTO PILOT. REPLACED HSCU. OPERATIONAL CHECK GOOD. AC RETURNED TO SERVICE. (SW21200406976)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PITCH TRIM 1-2 INOPERATIVE ON EICAS AT 520 FT SHORTLY AFTER DISCONNECTING AUTO PILOT. REPLACED HSCU. OPERATIONAL CHECK GOOD. AC RETURNED TO SERVICE. (SW21200406976)