Regional Jet 700 ER/LR (CRJ700)
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Other / Unknown; Inflight Event / Encounter Weather / Turbulence
Flight Crew Landed in Emergency Condition; Flight Crew Returned To Departure Airport; General Flight Cancelled / Delayed
Human Factors; Procedure
We met the aircraft in the maintenance hangar in ZZZ. Both pilots performed a walk around and preflight inspection. Both of us verified the maintenance status; logbooks; and gear pins. All normal procedures were followed. During the initial climb a 'Gear Disagree' message was displayed along with the associated triple chime after gear up was called. After flaps up was called a 'Slats Fail' message was displayed along with its associated single chime. We [notified] ATC and ran both QRHs.With the gear selected up the nose wheel was in the up position and both main wheels had a red X indication. Upon completion of the QRH 3 green DWN (Down) indications were displayed. With the flaps retracted the left wing slats indicated 1 and the right wing slats indicated 2. After completing the QRH we landed with slats and flaps fully deployed. While on a vector to final an amber (R) Wing Anti Ice message was displayed along with an associated single chime as well as an amber ICE message. This message extinguished shortly after appearing. We saw that we had some ice accumulation on the windshield wipers. With the three DWN and green landing gear indications; a slats malfunction; being at night; and the possibility of a malfunctioning wing anti ice system in icing conditions we elected not to do a low pass for a visual inspection of the landing gear. We landed uneventfully and cleared the runway in front of the maintenance hangar. We were informed the next day of a 'rigging' issue of the sensors on the landing gear and that a screw had come loose preventing the slats from retracting properly. The loose screw caused damage to the edge of the slats where they meet the wing. A cause for the wing anti ice message was not yet determined. Keep providing good training to pilots.
CRJ-700 Captain reported multiple system discrepancies shortly after takeoff requiring return to departure field.