On Monday, August 27, 2012 6:13:03 PM UTC-4, joesimmers wrote:
About 356,000 in 20 years

Holy smokes Tony!!!!

How many gliders have you worn out??

356,000 NM / 60 knots = 5933 hours, say 6000 hours

So it could be done in one glider.

6000 hours / 20 year = 300 hours a year