wrxpilot wrote:
On Sep 1, 9:30 pm, "Morgans" wrote:
"john smith" wrote in message

...

30-second Rule.
If you are not airborne in 30-seconds, abort, something is wrong.
Sort it our on the ramp.
So you count to 30 while you take off, at the right speed? Watch the second
hand?

I think there has to be one of the other rules to follow that are a bit more
concrete and easy to recognize. Anything would be better than that!

Or was that an attempt at humor? If so, I couldn't tell.
--
Jim in NC

Agreed... This "30 secs" rule is pretty impractical. I like to use
Sparky Imeson's rule of 71% rotation speed by 50% of the runway.
Having done a lot of my flying out of Colorado during the summer
months, it was a comforting rule of thumb.


As though you could really measure 71% accurately on most airspeed
indicators. Why not just say 70%?

Matt