A300
Flight Crew Air Transport Pilot (ATP)
Human-Machine Interface; Workload; Troubleshooting
Aircraft Equipment Problem Less Severe
Air Traffic Control Provided Assistance; Flight Crew Landed in Emergency Condition; Flight Crew Overcame Equipment Problem
Aircraft
During climb from MDT through approximately 15;000 ft; we received 'GREEN RSVR LO LEVEL' caution message on ECAM (Electronic Centralized Aircraft Monitor). We followed the ECAM and QRH (Quick Reference Handbook) procedures. Among other items; our speed was now restricted; we would need to manually extend the landing gear; and we had lost nose wheel steering. We advised ATC of our new speed restriction and requested a lower cruising altitude. We coordinated with Operations and Maintenance Control to confirm everyone was in agreement that we could continue to ZZZ. We then received new fuel numbers from Operations because of the speed constraint. We coordinated with Operations to arrange for a tow to the gate in ZZZ; and to advise ATC coordinators of our intentions in ZZZ. Finally; [advised] ATC upon checking in with the first approach controller in ZZZ. We landed and exited uneventfully. We were towed to the gate as planned.Maintenance speculated after our arrival that we were receiving an improper ECAM message as the indicated quantity in the green system appeared normal; and there was no immediate evidence of a leak.
A300 First Officer reported low hydraulic fluid indication during climb. The flight continued to their destination after completing checklists.