As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE MSG RETURN TO FIELD. DEFERRED LANDING GEAR RETRACTION SYSTEM PER MEL 32-30-1-2 CAT A. M FUNCT. CW. GEAR PINS INSTALLED, FLAGS REMOVED. REMOVED AND REPLACED PROXIMITY SENSING ELECTRONIC UNIT FOR LANDING GEAR EXTRACTION/RETRACTION SYSTEM IAW CRJ 700 AMM. PERFORMED OPERATIONAL TEST OF EXTRACTION/RETRACTION OF LANDING GEAR. OPS CHECK GOOD, THIS CLEARS MEL