Takeoffs that could not be located:

• Salamanca, Piedrahita, Peña Negra. — outside the curated takeoff dataset (7 flights)
• Puerto de Chia, Piedrahita — outside the curated takeoff dataset (1 flight)
• Valle de Bravo, El Peñon — outside the curated takeoff dataset (48 flights)
• Fethiye, Ölüdeniz, Babadag upper start (1900m) — outside the curated takeoff dataset (2 flights)
• Fethiye, Ölüdeniz, Babadag lower start (1700m) — outside the curated takeoff dataset (6 flights)
• Fethiye, Ölüdeniz, Babadag middle start (1800m) — outside the curated takeoff dataset (1 flight)
• Laragne, Buc Sederon — outside the curated takeoff dataset (1 flight)
• Laragne, Chabre — outside the curated takeoff dataset (2 flights)
• Laragne, Sederon — outside the curated takeoff dataset (1 flight)
• Monte Caira — outside the curated takeoff dataset (3 flights)
• Norma — outside the curated takeoff dataset (17 flights)
• Annecy, Montmin, Col de la Forclaz — outside the curated takeoff dataset (11 flights)
• Annecy, Talloires, Planfait — outside the curated takeoff dataset (2 flights)
• Kahana, Oahu — outside the curated takeoff dataset (2 flights)
• Åre, Mörvikshummeln — outside the curated takeoff dataset (3 flights)