Merck's Gulfstream G650ER N800MK returns from Barcelona to Trenton

Merck's Gulfstream G650ER, tail number N800MK, landed at Trenton Mercer Airport (KTTN) in Ewing Township, New Jersey, on Sunday, October 18, 2026. The flight departed Josep Tarradellas Barcelona-El Prat Airport (LEBL) in Spain at 12:32 UTC and touched down at 20:01 UTC. The trip took 7 hours and 29 minutes.

The aircraft used 45 percent of its range on this trip. Barcelona's longest runway is 11,000 feet. Trenton Mercer's longest runway is 6,006 feet. The airport sits at 213 feet above sea level.

The great-circle distance between the two airports is 3,372 nautical miles, or 3,880 miles. N800MK averaged a ground speed of 451 knots and reached a top speed of 522 knots. Its highest altitude during the flight was 43,050 feet. The aircraft burned an estimated 3,514 US gallons of jet fuel, producing about 33.8 metric tons of CO2. That is roughly the same as driving a car 83,554 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 13th landing by a Merck aircraft at Trenton Mercer Airport in the tracked period from August 26 to October 16, 2026. The previous landing at KTTN was on October 16, two days before this flight, by Merck's other Gulfstream G650ER, N822MK. 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 tracked window from August 26 to October 16, 2026, Merck's two jets made 40 flights. The most common destination was Ewing Township with 12 landings. Newark had 11 landings. Benton Harbor had two landings.

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.

The aircraft had spent about two days on the ground in Barcelona before this return trip. In the 30 days before this flight, Merck's two jets flew 33 flights totaling 55.4 hours in the air. Those flights produced an estimated 250,282 kilograms of CO2. The longest leg in that period was a 3,773-nautical-mile flight from Rome to Trenton on October 2, flown by N822MK.

Before this flight, N800MK had spent about two days in Barcelona. The previous tracked landing there was on October 16. That same day, N822MK flew from Newark to Ewing Township in 13 minutes, covering 37 nautical miles.

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