Takeoffs that could not be located:

• Rjukan, Gaustaråen — no usable coordinates recorded on flightlog.org (278 flights)
• Løkken, Nørre Lyngby — outside the curated takeoff dataset (15 flights)
• Chamonix, Aiguille du Midi — outside the curated takeoff dataset (197 flights)
• Rjukan, Finbergnuten — no usable coordinates recorded on flightlog.org (476 flights)
• Chamonix - Le Tour - Domaine Balme — outside the curated takeoff dataset (77 flights)
• Chamonix, La Flegere — outside the curated takeoff dataset (5 flights)
• Chamonix, Brevent, top station — outside the curated takeoff dataset (40 flights)
• Chamonix - Plan du Aiguille — outside the curated takeoff dataset (21 flights)
• Planpraz, midstation, Le Brevent Chamonix — outside the curated takeoff dataset (9 flights)
• Chamonix, Mont Blanc du Tacul — outside the curated takeoff dataset (9 flights)
• Chamonix, Mont Maudit — outside the curated takeoff dataset (1 flight)
• Chamonix, Dome du Gouter — outside the curated takeoff dataset (2 flights)
• Chamonix, Mont Blanc 4810 — outside the curated takeoff dataset (6 flights)
• Glacier du Geant — outside the curated takeoff dataset (2 flights)
• Trolltunga, Odda — no usable coordinates recorded on flightlog.org (1 flight)
• Rjukan - Svaddenipun — no usable coordinates recorded on flightlog.org (26 flights)
• Bosnuten Rauland — no usable coordinates recorded on flightlog.org (5 flights)
• Syvdefjorden, Skor, Skorenipa — no usable coordinates recorded on flightlog.org (1 flight)
• Moltinden Lofoten — no usable coordinates recorded on flightlog.org (3 flights)
• Gimsøya, Svarttinden — no usable coordinates recorded on flightlog.org (1 flight)
• Tysfjord, Stetind — no usable coordinates recorded on flightlog.org (1 flight)
• Chamonix — outside the curated takeoff dataset (64 flights)
• Berner Oberland, Mønch — outside the curated takeoff dataset (1 flight)
• Berner Oberland, Jungfrau — outside the curated takeoff dataset (1 flight)
• Grindelwald, Mattenberg — outside the curated takeoff dataset (1 flight)
• Berner Oberland, Eiger — outside the curated takeoff dataset (2 flights)
• Skirvedalen, Rustnuten — no usable coordinates recorded on flightlog.org (14 flights)
• Zermatt, Wisshorn — outside the curated takeoff dataset (1 flight)
• Zermatt, Matterhorn — outside the curated takeoff dataset (1 flight)
• Zermatt, Breithorn — outside the curated takeoff dataset (1 flight)
• Dyrskarnuten — no usable coordinates recorded on flightlog.org (1 flight)
• Rauma- Alnestinden — no usable coordinates recorded on flightlog.org (3 flights)
• Hjartdal, Ingebjørgnuten — no usable coordinates recorded on flightlog.org (4 flights)
• Chamonix, Pointe Bravais — outside the curated takeoff dataset (1 flight)
• Rjukan, Svaddetoppen — no usable coordinates recorded on flightlog.org (23 flights)
• Tuddal, Lille Gaustakne — no usable coordinates recorded on flightlog.org (2 flights)
• Annecy, Montmin, Col de la Forclaz — outside the curated takeoff dataset (2 flights)
• Annecy, Talloires, Planfait — outside the curated takeoff dataset (8 flights)
• Møsvatn skipark — no usable coordinates recorded on flightlog.org (1 flight)
• Chamonix - Grands Montets — outside the curated takeoff dataset (4 flights)