interesting, that's a damned brand-new aircraft (first consumer single-jet engine)
that number is assuming only 200lb payload, per wiki:
>Range: 600 nmi (690 mi; 1,111 km) with 1,200 lb (544 kg) payload at max cruise speed of 300 kn or 1,200 nmi with 200 lb (91 kg) payload at economy cruise speed of 240 kn
seems 'off' having such a small aircraft bouncing around US mid-Atlantic that's registered to UK military