TrajAir

From the catalogue. Listed by one researcher from one source page.

• id: trajair
• kind: aerial
• robot or device: ADS-B aircraft trajectories (class: aerial)
• how collected: transponder logging
• size as stated: 111 days over 8 months
• hours: not stated | hours only claimed: none | episodes: not stated
• year: 2021
• organisation: not stated
• licence: not stated (class: not stated)
• access: not stated (class: not stated)
• link (paper): https://arxiv.org/abs/2109.15158

Confirm the licence at the link before relying on it.