Takeoffs that could not be located:

• Caico towing field — outside the curated takeoff dataset (42 flights)
• Løkken, Nørre Lyngby — outside the curated takeoff dataset (3 flights)
• Finse — no usable coordinates recorded on flightlog.org (1 flight)
• Unknown takeoff — no linkable takeoff on flightlog.org (491 flights)
• Gilleleje Feriecenter, Sjælland — outside the curated takeoff dataset (2 flights)
• Rudbjergs Knude — outside the curated takeoff dataset (2 flights)
• Lökken — outside the curated takeoff dataset (9 flights)
• Col de Forclaz- Montmin — outside the curated takeoff dataset (3 flights)
• Annecy, Montmin, Col de la Forclaz — outside the curated takeoff dataset (12 flights)
• Alicante, Palomaret — outside the curated takeoff dataset (10 flights)
• TOIX, Monte de Toix, Altea — outside the curated takeoff dataset (1 flight)
• Dobbelt registrert. Bruk: Valdres, Vang (Tyin), Øye Jonsgard — no usable coordinates recorded on flightlog.org (1 flight)
• Chaves — outside the curated takeoff dataset (4 flights)
• Montalegre, Mountain of Larouco — outside the curated takeoff dataset (10 flights)
• La Clusaz, L'Étale — outside the curated takeoff dataset (1 flight)
• Crans Montana, Bella-Lui — outside the curated takeoff dataset (5 flights)
• Manilla, Mt Borah (NSW) — outside the curated takeoff dataset (24 flights)
• Stanwell Park - Sydney — outside the curated takeoff dataset (1 flight)
• Kössen, Jansenstation — outside the curated takeoff dataset (3 flights)
• Spain, Sierra Nevada, Loma de Cauchiles — outside the curated takeoff dataset (14 flights)