As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED A LANDING GEAR AIR/GROUND FAIL MESSAGE ON ROTATION AND HAD TO USE THE DOWNLOCK OVERRIDE BUTTON TO GET THE LANDING GEAR RETRACTED. AFTER GEAR RETRACTION, THE LANDING GEAR AIR/GROUND FAIL MESSAGE REMAINED FOR THE REST OF THE FLIGHT. ON LANDING THE CREW REPORTED IC1/2 WOW INOP, SPS ADVANCED, STICK SHAKER MESSAGES AS WELL AS THE GUST LOCK WOULD NOT ENGAGE AND THE ENGINE 1 REVERSER WOULD NOT DEPLOY. MAINTENANCE RESET POWER, AND PERFORMED AND AIR/GROUND ADJUSTMENT TEST WITH NO DEFECTS NOTED. ON 3/22/2011 AN ENGINEERING INSTRUCTION WAS COMPLETED TO REPLACE THE LGEU DUE TO FAIL MESSAGES ON THE CMC.