As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INITIAL CLIMB OUT WHEN SELECTING GEAR UP, RECEIVED LT MAIN GEAR DISAGREE APPROX 6 SECONDS AFTER GEAR SELECTION. NO OTHER ASSOCIATED MSGS. GEAR LEVER NOT MOVED WITHIN 30 SECONDS. LT MLG BOX RED, NOSE & MLG WHITE UP. MANUAL RELEASE USED. NORMAL HYD INDICATIONS. COMPLIED WITH QRH.