What was found
AT ROTATION ON TAKEOFF, RECEIVED IS FLAG ON PFD AND EFIS COMP MON MSG LSO RECEIVED STALL FAIL CAUTION MESSAGE. RAN QRH. ON GROUND F/O FOUND OXYGEN SERVICE PANEL OPEN. REQ INSP. ***AIRCRAFT REMOVED FROM SERVICE**** PERFORMED STALL OPS CHECK IAW AMM 27-35-01. OPS CHECK GOOD. IAW AWA SUPP 17-077D, ACFT NOT FLOWN THROUGH ICING CONDITIONS, C/W PITOT STATIC MOISTURE CHECK AND OPS TEST OF #2 ADC. NO DEFECTS NOTED. INSPECTED O2 SERVICE DOOR. NO DEFECTS NOTED WITH LATCH OR DOOR. NO NO DAMAGE TO FUSELAGE. AIRCRAFT OK FOR SERVICE AT THIS TIME.