EMB ERJ 135 ER/LR
Flight Crew Commercial
Aircraft Equipment Problem Less Severe
Air Traffic Control Issued New Clearance; Aircraft Equipment Problem Dissipated; Flight Crew Requested ATC Assistance / Clarification
ATC Equipment / Nav Facility / Buildings; Aircraft
Departing 18L from DFW on the Soldo 3 SID; we received a 'Lateral Mode Off' (NAV had been selected ; and was in NAV mode) EICAS message in the climb along with the loss of nav data on the MFD. ATC was notified immediately and were given a heading. Very shortly after ATC's instructions; all data and info came back online. Continued on; uneventful flight. ATC advised us of no problem and no deviation. Possible satellite signal interruption.
Lateral mode fail caution on EICAS at approximately 100 FT AGL. Lost waypoint info on MFD. Advised ATC unable to proceed with RNAV departure. ATC assigned a heading. Nav data reappeared. Given direct to a waypoint. Remainder of flight was uneventful.  Tell ATC right away no RNAV.
EMB135 flight crew experiences a 'Lateral Mode Off' EICAS message along with loss of navigation data on the MFD during an RNAV departure. ATC is advised and issues a heading; but within seconds all NAV data reappears.