As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTINUOUS GEAR HORN AND FLASHING YELLOW GEAR UP INDICATIONS ON EICAS 1 AT TOP OF DESCENT. LASTED APPROXIMATELY 1 MINUTE. RETURNED TO FIELD. (FLT 5598) CLOSED REMOVED AND REPLACED NR 2 RAD. ALT. COMPUTER WITH SERVICEABLE UNIT IAW AMM. OPS CHECK GOOD. ALL GEAR INDICATIONS NORMAL. INTERROGATED PSEU THROUGH MDC AND NO DEFECTS NOTED.