EMB ERJ 145 ER/LR
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural FAR
Air Traffic Control Provided Assistance; Flight Crew Overcame Equipment Problem; Flight Crew Requested ATC Assistance / Clarification; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft; Procedure
I was operating as First Officer and pilot flying on our morning flight out of ZZZ. As soon as the gear came off the ground we heard a ding and received two EICAS messages; LG AIR/GND FAIL and ENG1-2 REV DISAGRE". In the climb out the captain ran the QRH and advised dispatch through ACARS of the situation and that we would continue to our destination which not only had the longest runway but also maintenance. We [requested priority handling] with ZZZ1 Center and asked them to advise ZZZ2 that we would need the center runway for our landing. ATC was very helpful. Upon arrival the trucks were standing by just in case. The flight was uneventful and was conducted normally. The [priority handling request] was precautionary just in case there was an issue. We executed a normal landing. As soon as we got the message we knew that there was an issue and that we would need to [request priority handling] at our destination. As soon as we received the messages we were unsure of the cause but attributed it to possibly having something to do with the fact that the plane had been in short term storage.We reacted appropriately by flying the plane first and then once at a safe altitude ran the QRH and worked as a team to troubleshoot the problem. As mentioned above we decided the best course of action and most conservative approach was to [request priority handling] and continue to our destination which was most suited for this type of situation."
First Officer reported an air/ground sensing system failure after takeoff.  This failure was suspected of being a result of aircraft storage and maintenance issues.