| Date: | October 31, 1999 |
| Location: | Off Nantucket Island, Massachusetts |
| Aircraft: | Boeing B-767-366ER |
| Reg: | SU-GAP |
| Airline: | EgyptAir |
| Flight No: | 990 |
| Fatalities: | 217 : 217 |
| Soon after reaching cruising altitude the B767 entered several dives and recoveries before plunging into the Atlantic Ocean. The accident was caused by the relief first officer's flight control inputs which caused the airplane's departure from normal cruise flight and subsequent impact with the Atlantic Ocean. The reason for the first officer's actions were not determined by the NTSB. One could conclude the actions were deliberate in an attempt to commit suicide. |