G. Kevorkian (who had flown for TWA for 31 years and the U.S. Air Force for 9 years), 57-year-old Captain/Check Airman Steven E. Snyder (who had flown for TWA for 32 years), and 63-year-old Flight Engineer/Check Airman Richard G. Campbell Jr. (who had flown for TWA for 30 years and the U.S. Air Force for 12 years), as well as 25-year-old flight engineer trainee Oliver Krick (who previously served as a business pilot for 4 years), who had flown for TWA for 26 days and was starting the sixth leg of his initial operating experience training. The ground-maintenance crew locked out the thrust reverser for engine #3 (treated as a minimum equipment list item) because of technical problems with the thrust reverser sensors during the landing of TWA 881 at JFK, prior to Flight 800's departure. Additionally, severed cables for the engine #3 thrust reverser were replaced. During refueling of the aircraft, the volumetric shutoff (VSO) control was believed to have been triggered before the tanks were full. To continue the pressure fueling, a TWA mechanic overrode the automatic VSO by pulling the volumetric fuse and an overflow circuit breaker. Maintenance records indicate that the aircraft had numerous VSO-related maintenance writeups in the weeks before the accident. TWA 800 was scheduled to depart JFK for Charles de Gaulle Airport around 7:00 pm, but the flight was delayed until 8:02 pm by a disabled piece of ground equipment and a passenger/baggage mismatch. After the owner of the baggage in question was confirmed to be on board, the flight crew prepared for departure, and the aircraft pushed back from Gate 27 at the TWA Flight Center. The flight crew started the engines at 8:04 pm. However, because of the previous maintenance undertaken on engine #3, the flight crew only started engines #1, #2, and #4. Engine #3 was started 10 minutes later at 8:14 pm. Taxi and takeoff proceeded uneventfully. TWA 800 then received a series of heading changes and generally increasing altitude assignments as it climbed to its intended cruising altitude. Weather in the area was light winds with scattered clouds, with dusk lighting conditions. The last radio transmission from the airplane occurred at 8:30 pm, when the flight crew received and then acknowledged instructions from Boston Center to climb to . The last recorded radar transponder return from the airplane was recorded by the Federal Aviation Administration (FAA) radar site