Princess Royal in Air-Prox incident...
 

From BBC News website

http://news.bbc.co.uk/1/hi/uk/4003799.stm

'Near miss' at 3.3 miles?

Anything less than 5 miles in CAS is an Airprox.

Hardly news worthy though:hmm:

Tonks:zzz:

Hope he signed for the Royal Flight

Incidentally, why is there no extra box on the auth sheet to sign in for it????

Not in ALL CAS...... just this bit...!

Come down to the LTMA where we use 3nm..... and dream of getting 3.3nm!!!

:)

Lionel,

I guess 'cause it's that important.

Tonks:cool:

Actually saw one yesterday so there must be at least 3 serviceable. Nice and quiet too.

Must have got lost
Last time I flew from Wiltshire to Aberdeen, I went nowhere near Morcambe Bay!!

Love many, Trust a few, Always paddle your own canoe!:hmm:

If the EFA was going flat out, then they'd be closing at a fair old rate. How long does it take to cover 3.5 miles with a closing speed of 1500 knots? A few seconds?

Hang on, with my old Mental Dead Reckoning Skills, 1500 kts is umm.... divided by 60. 3.3 Nautical Miles is how many feet? Errr... nope, I need an MFD. Or a Navigator.

An AIRPROX has no separation trigger criteria built in to it. You could actually have an AIRPROX with greater than standard separation between the aircraft at all times. And on the other hand you could have aircraft who do not have standard separation between them, but would not be deemed to be in an AIRPROX situation.

The official definition:

''an Airprox is a situation in which, in the opinion of a pilot or a controller, the distance between aircraft as well as their relative positions and speed have been such that the safety of the aircraft involved was or may have been compromised.''