What was found
CREW REPORTED-ON TAKEOFF WE HAD A LANDING GEAR AIR TO GROUND FAIL IMMEDIATELY WHEN WE WENT TO PULL THE GEAR UP. THEN WE HAD A LANDING GEAR LEVER DISAGREE AFTER THE RIGHT MAIN WHEEL WOULD NOT RETRACT. SHORTLY AFTER THAT WE WERE GETTING A “TAKEOFF TRIM” AUDIBLE WARNING. WE HAD SOME OTHER MESSAGES COME ON DURING THE EVENT SUCH AS A SPOILER FAIL AND OTHERS I WILL ATTACH A PICTURE. ON LANDING WE HAD AN AUDIBLE “FLAPS” WARNING EVEN THOUGH WE HAD FLAPS SET TO 45 ALREADY. CORR ACTION- MX TROUBLESHOT TO NLG AND MLG REQUIRED SERVICING. COMPLETED SERVICING AND PERFORMED JACK AND RETRACT OPS TESTED GOOD NO MESSAGES PRESENT.