United Airlines Flight 663 incident
N507UA, the aircraft involved, seen here on July 28, 2011 | |
| Incident | |
|---|---|
| Date | 7 April 2010 |
| Summary | Suspected terrorist attack |
| Site | en route Washington D.C. to Denver |
| Aircraft | |
| Aircraft type | Boeing 757-222 |
| Operator | United Airlines |
| Call sign | UNITED 663 |
| Registration | N507UA |
| Flight origin | Ronald Reagan Washington National Airport, Crystal City, Virginia, U.S. |
| Stopover | Denver International Airport, Denver, Colorado, U.S. |
| Destination | Las Vegas International Airport, Las Vegas, Nevada, U.S. |
| Occupants | 163 |
| Passengers | 157 |
| Crew | 6 |
| Fatalities | 0 |
| Survivors | 163 |
The United Airlines Flight 663 incident was a "minor international incident" in 2010 involving a Qatari diplomat on the leg of a United Airlines flight from Ronald Reagan Washington National Airport (Washington, D.C.) to Denver International Airport (Denver, Colorado). The diplomat prompted a mid-air terrorism alert after smoking in the aircraft lavatory, which led the Qatari government to recall him two days later.