Marcel Hollander:
Helicopter practice 091
Marcel Hollander:
Helicopter practice 160
Marcel Hollander:
Helicopter practice 171
Marcel Hollander:
Helicopter practice 233
Marcel Hollander:
Helicopter practice 256
Marcel Hollander:
Helicopter practice 261
Marcel Hollander:
Helicopter practice 267
Marcel Hollander:
Helicopter practice 276
Marcel Hollander:
Helicopter practice 317
Marcel Hollander:
Helicopter practice 324
Marcel Hollander:
Helicopter practice 328
Marcel Hollander:
Helicopter practice 330
Marcel Hollander:
Helicopter practice 341