commercial operation
as defined in Regulation (EC) No 216/2008 of the European Parliament and of the Council of 20…, Article 3, point (i) (Definitions)
any operation of an aircraft, in return for remuneration or other valuable consideration, which is available to the public or, when not made available to the public, which is performed under a contract between an operator and a customer, where the latter has no control over the operator;