On Mar 30, 8:42 pm, "Jay Honeck" wrote:

I would NEVER have attempted that flight "pre-XM", simply because I'd be
trying to paint a picture of weather in my head from a radio briefing (IF
you could even get ahold of Flight Service), and you'd have no idea of the
"big picture" that live XM paints so wonderfully for you.

Wait -- are you serious?

While in flight weather provides localized details of the changes in
weather after the preflight briefing, ANY pilot should have the big
and little pictures in his/her head before launching anytime, period.

In Flight wx data should simply confirm what you expect to happen, or
help educate you on how your interpretation/prognostics were wrong.

XM doesn't provide the depth of information available he
http://aviationweather.gov/

And if you're relying on XM in lieu of a Standard wx brief, you're in
violation of the CFRs.


Dan Mc