Seen outside on 28th November at Stans (afternoon): - PC 21 Pilatus sn P01, HB-HZA, outside sn 101, HB-HZC, flying sn 102, HB-HZD, flying - PC 21 for RSAF sn 171, 917, HB-HWQ, flying with underwing tanks sn 175, 921, HB-HWU, outside - PC 21 for Qatar sn 217, QA 357, HB-HVH, flying with underwing tan...