As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER SELECTING GEAR UP, RECEIVE ANTI-SKID INBD & PARK BRAKE SOV CAUTION MESSAGES, & LG DID NOT RETRACT. RAN QRH PROCEDURE & GEAR RETRACTED AFTER A DELAY. FLT 6415 REPLACED LG CONTROL HANDLE IAW AMM. C/W LG RETRACTION, EXTENSION & FREEFALL. OPERATIONS CHECKED GOOD IAW AMM PN 7-45502-5.