Following agreement from the Trust clinical governance board, piloting the escalation policy was originally introduced in June 2009.
With no on-board pilot or crew, the aircraft would hold more and weigh less.
Drones can be far cheaper to operate than anything that requires an on-board pilot, and they are handy for making maps and taking pictures and videos.
An on-board pilot handled the take-off, from Warton, near Preston in Lancashire, and landing, in Inverness.
But that pilot may be on the ground and he may be looking after more than one unmanned aircraft at the same time.Commercial flights carrying freight and express parcels might one day also lose their on-board pilots.
With both on-board, pilots will have a backup system in case one conks out.
The other people on board were pilot Eric Swaffer, Izabela Lechowicz, also a pilot, and two members of Vichai's staff, Nursara Suknamai and Kaveporn Punpare.
Screws can be driven through the board without pilot holes, however, if a certain spacing is required, laying out the screw locations and drilling pilot holes will make meeting this requirement simpler, and will make starting the screws easier.
The plane plowed into a hillside, killing everyone on board: the pilot, a photographer, and the artist.
From 2002, he was chairman of Birmingham's Castle Vale neighbourhood management board, a pilot scheme to regenerate a neglected estate.
Effects of combining electric stimulation with active ankle dorsiflexion while standing on a rocker board: a pilot study for subjects with spastic foot after stroke.
