It is to do with air flow, you don't get proper cooling and
crankcase ventilation is very poor on the ground.

After landing, cool down is as important as warm up,
particularly with a turbocharged engine.


--
James H. Macklin
ATP,CFI,A&P

--
The people think the Constitution protects their rights;
But government sees it as an obstacle to be overcome.
some support
http://www.usdoj.gov/olc/secondamendment2.htm
See http://www.fija.org/ more about your rights and duties.


"A Lieberman" wrote in message
...
| On Sun, 08 Jan 2006 13:45:12 GMT, Jay Honeck wrote:
|
| Or, put another way, it's four 1-hour hamburger flights
per week, every
| week, all year long...
|
| Is this slightly low Jay? 1/2 hour each way? My
hamburger runs are
| minimum 1 hour each way, which would reduce it to 2
hamburger flights per
| week.
|
| You are right, 200 hours a year is an awful lot of flying.
You had me
| curious for me, how much in a year I fly, and it was as
follows:
|
| 2001 11.7
| 2002 49.5
| 2003 142.2
| 2004 192.9
| 2005 126.4
| 2006 4.0
|
| I try to fly once a week at minimum myself and no less
then one hour air
| time when I fly.
|
| I was told ground runs is one of the worst things you can
do to an airplane
| engine, as it was designed for sustained high RPM
operations, not ground
| run RPMS.
|
| Allen