Global 360 Aviation

RVSM is an aviation standard that reduces the required vertical separation between aircraft from 2,000 feet to 1,000 feet between flight levels FL290–FL410. This effectively doubled the number of usable cruising altitudes, improving airspace capacity and fuel efficiency.

Phase 1 was essentially a controlled trial (operational evaluation) to validate safety, aircraft performance, and monitoring systems before wider adoption. It applied initially to flight levels FL330–FL370 (33,000–37,000 ft), was conducted in North Atlantic Minimum Navigation Performance Specification (MNPS) airspace, and only specially equipped and approved aircraft were allowed to participate.

https://global360aviation.com/reduced-vertical-separation-minima-rvsm-phase-1/

The G280, which entered service in November 2012, can fly eight passengers 3,600 nm/6,667 km at Mach 0.80.

Source and Photo Credit: Gulfstream Aerospace Corporation
(https://www.gulfstreamnews.com/en/news/?id=cb05279e-7a54-4fbd-b743-c10b6c216089)

https://global360aviation.com/5901-2/

One more contract trip before Christmas

The company Firma Rheintalwerke G. Basten, from which the "B" in the original designation is derived, manufactured the first two prototypes.

In 1972 Pilatus bought the manufacturing licence for the B-4 and renamed it the B4-PC11. In the spring of the same year the first production example (numbered HB-1100) made its first flight. About 300 were produced beginning in 1972 until the Japanese company Nippi bought the rights to the design.

https://global360aviation.com/the-first-maiden-flight-of-the-first-prototype-of-the-b4/