© ir. Willem Langelaan OAA. All rights reserved
2019 december 10
HIGH PERFORMANCE SAILPLANES
planeurs de grande finesse
LINKS
 
International Gliding Commission, FAI-IGC
 
 
Soaring Association of Canada, SAC
 
 
SOSA Gliding Club
 
 
Soaring Society of America, SSA
 
 
Canadian Owners & Pilots Association, COPA
 
 
XU Aviation Ltd
 
 
Compass Swinging made easy