Citation Excel (C560XL)
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 250; Flight Crew Total 7800; Flight Crew Type 300
Human-Machine Interface; Situational Awareness; Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation - Altitude Excursion From Assigned Altitude; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert; Flight Crew Overcame Equipment Problem; Flight Crew Returned To Clearance
Aircraft
Upon climbout on the ZZZZZ departure; the aircraft's FMS dropped all data of the departure [and] the MFD went blank. The aircraft deviated from the published departure. There was never a terrain warning from the GPWS. Upon discovery of the deviation; I climbed the aircraft and corrected back onto the published departure as ATC was alerting us to climb and turn left on course. There was never a time where terrain was an issue. I corrected back to course as ATC contacted my aircraft.
C560XL Captain reported an FMS data drop and MFD failure; resulting in an altitude and heading deviation.