As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED EFIS COMP MON ABOVE 80 KNOTS IAS MESSAGE V1, AFTER TAKEOFF RECEIVED STALL FAIL CAUTION 800 FT EXTREMELY LOUD NOISE COCKPIT. RETURNED FOR LANDING. FOUND OXYGEN SERVICE DOOR OPEN. SECURED DOOR, NO DAMAGE FOUND. INSPECTED RVSM CRITICAL AREA NO DEFECTS FOUND. INTERROGATED MDC, NO FAULTS FOUND. SPC COMPLIED WITH FUNCTIONAL CHECK OF STALL PROTECTION SYSTEM. TEST OK IAW CRJ200 AMM. (M)