Opinion of Advocate General Campos Sánchez-Bordona delivered on 27 June 2019.#Deutsche Lufthansa AG v Land Berlin.#Request for a preliminary ruling from the Bundesverwaltungsgericht.#Reference for a preliminary ruling — Air transport — Directive 2009/12/EC — Articles 3 and 6 — Article 11(1) and (7) — Airport charges — Protection of airport users’ rights — Whether it is possible for the airport managing body to agree charges lower than those approved by the independent supervisory authority — Remedies available to an airport user — Collateral challenge before a civil court giving judgment on the basis of equitable criteria.#Case C-379/18.