Sail Plane
Flight Crew Commercial
Flight Crew Last 90 Days 29; Flight Crew Total 8090; Flight Crew Type 5000
Conflict NMAC
General None Reported / Taken
Human Factors
Light single engine Piper passed 50 - 100 FT below me as I was approaching IP; crossing the departure end of Runway 23 about 1;400 FT above ground. The airplane approached from my 7 o'clock direction; departing (continuing) away about my 1 o'clock direction. At the time I was flying about 45 MPH and I would estimate the other aircraft cruising past me at over 100 MPH. I based my estimate on vertical separation on the wingspan of the glider I was flying which is 51 FT. They passed directly underneath me within one or two of my wingspans.
Glider pilot reported an NMAC with a light single near P48 airport.