"Ron Wanttaja" wrote in message
...

The Queen apparently doesn't have any overseas-capable aircraft, so they
charter
something when necessary,

It's long-haul capability that the BAe146s of the Queen's Flight lack. I
believe they are used around Europe.

...she's using a chartered BA Boeing 777 on this trip. According to one
poster,
they use 'Kitty Hawk' as a call sign when the Queen is aboard.

That's correct. Kitty Hawk with the Queen aboard, Ascot (I think) for other
duties. Prefix is KRF. KHA is Kittyhawk Air Cargo, which is supposed to be
"Air Kitty Hawk".

In the UK, restricted airspace is established for most fixed-wing royal
flights.

Julian