B777-200
Flight Crew Air Transport Pilot (ATP)
Situational Awareness; Time Pressure
Aircraft Equipment Problem Less Severe
Aircraft Aircraft Damaged; Flight Crew Rejected Takeoff; Flight Crew Returned To Gate; General Maintenance Action
Aircraft
Low speed abort.  Forward cargo door EICAS message.  Concurrent with selection of TOGA and engine run up to TO2 power; EICAS message 'FWD Cargo Door' appeared.  Takeoff was aborted at a speed less than 50 KTS.  Cleared runway; and taxied back to the ramp.  Subsequent inspection of cargo door revealed no obvious discrepancies.  During this ground interrupt the left engine was found to have lost the tail cone.  A search found the tail cone in the area just off the approach end of Runway XX.  There were no indications in the cockpit of an engine problem.
As takeoff thrust was set a B777's forward cargo door light illuminated; so the takeoff was rejected.  At the gate; no cargo door defect was found but the left engine tail cone was discovered missing.