Where is VMC defined?

[Straight Up]

I would like to know where Visual Metroligical Conditions are defined.

(Just the met conditions, not VFR/IFR definitions)

Are these the same the world over, or is Australia different to the US which is different to the UK etc?

Do different A/C types have different definitions? A F-18 needs a lot more visibility than a balloon.

I need some form of reference for a flight test procedure, I can't tell someone to only do the test VMC if I don't tell them where/how to define it. An Australian reference would be good, but any will do.

Cheers,

SU :confused:

[mattpilot]

can't help you with aussie stuff, but since you said any reference, here are the US rules:


Found at 91.155

- below 1200ft/700ft AGL (Class G airspace):

Day: 1 mile vis and clear of clouds

Night: 3 miles vis, 500ft below, 1000ft above, and 2000ft horizontal distance from clouds

- Class G airspace above 1200ft AGL - 10000ft MSL

day: 1 mile vis, 500ft below, 1000ft above, 2000 horizontal distance from clouds

night: 3 miles vis, 500ft below, 1000ft above, 2000ft horizontal distance from clouds

- Class G airspace above 10000ft MSL: 5 miles vis, 1000ft above, 1000ft below, 1 mile horizontal distance from clouds



- 1200ft AGL to 10000ft MSL(Class E airspace), 3 miles vis 1000ft above, 500ft below, 2000ft horizontal distance from clouds

- 10000ft MSL - 18000ft MSL (Class E airspace), 5 miles vis, 1000ft above, 1000ft below, 1 mile horizontal distance from clouds


- Class B airspace (its the busy airspace): 3 miles & clear of clouds

- Class C airspace: 3 miles vis, 500ft below, 1000ft above, and 2000ft horizontal distance from clouds



All mile references are statute miles


hope this helps

[A Comfy Chair]

AIP's,

ENR 1.2-2 VISUAL METEOROLOGICAL CONDITIONS (VMC) TAKE OFF, ENROUTE AND LANDING

[Straight Up]

Thanks guys, that's exactly what I was looking for.

The AIP has a nice mixture of ft and metres, wonder they didn't stick to imperial.

Anyway, as always PPRUNE wins as the best source of knowledge, not to mention being more educational than some of the courses I've been on.

Ask and ye shall receive!:D

SU