Merck's Gulfstream G650ER N800MK returns from Belgium to Trenton

Merck & Co.'s Gulfstream G650ER, tail number N800MK, landed at Trenton Mercer Airport (KTTN) in Ewing Township, New Jersey, on Friday, November 6, 2026. The flight departed Ursel Air Base (EBUL) in Belgium at 16:31 UTC and touched down at 23:50 UTC. The trip took 7 hours and 19 minutes.

The flight used 43 percent of the aircraft's range. The departure runway at Ursel Air Base is 9,777 feet long at an elevation of 95 feet. The arrival runway at Trenton Mercer Airport is 6,006 feet long at an elevation of 213 feet.

The great-circle distance between the two airports is 3,200 nautical miles, or 3,683 miles. N800MK averaged a ground speed of 438 knots and reached a top speed of 530 knots. Its highest altitude during the flight was 47,025 feet. The aircraft burned an estimated 3,437 US gallons of jet fuel, producing about 33.0 metric tons of CO2. That is roughly the same as driving a car 81,729 miles. The Gulfstream G650ER is an ultra long range jet with a range of 7,500 nautical miles, a top speed of Mach 0.925, and a service ceiling of 51,000 feet. It can seat up to 19 passengers.

This was the 14th landing by a Merck aircraft at Trenton Mercer Airport in the tracked period from September 23 to November 6, 2026. The previous landing at KTTN was on October 28, nine days before this flight, by the same aircraft. Merck's home base is Morristown Municipal Airport (KMMU), about 36 nautical miles from KTTN. Usual destinations on file for Merck include Washington Dulles, London Heathrow, Frankfurt Main, Tokyo Haneda, San Francisco, and Minneapolis. In the 24 hours before this landing, other tracked aircraft landed at Trenton Mercer: a Bombardier Challenger 300 for PNC Financial about 22 hours earlier, a Gulfstream G550 for DuPont about 7 hours earlier, a Bombardier Challenger 605 for FMC Corp about 6 hours earlier, and a Gulfstream G650ER for Johnson & Johnson about 4 hours earlier.

Merck & Co. is a pharmaceutical giant based in Rahway, New Jersey. Its oncology blockbuster Keytruda is a major revenue driver. The company's flight department is located at West Trenton, beside Trenton-Mercer Airport. Merck operates two Gulfstream G650ERs, N800MK and N822MK, both in the contiguous 'MK' N-number block. Three Airbus H160-B helicopters in the same series are registered to Merck Sharp & Dohme LLC at the same West Trenton address.

In the 30 days before this flight, Merck's two Gulfstream G650ERs flew 30 flights totaling 70.4 hours in the air. They visited 16 airports in 8 countries and covered about 29,798 nautical miles. The longest leg in that period was from Ewing Township to Rome on November 2, 2026, a distance of 3,772 nautical miles.

Before this landing, N800MK had made a short flight from Friedrichshafen to Zaventem on November 6, lasting 36 minutes over 290 nautical miles. Earlier that week, on November 5, it flew from Zurich to Friedrichshafen in 22 minutes over 40 nautical miles.

N800MK is now back at its operating base near Merck's headquarters, ready for its next trip.