A method for checking the appropriateness of an aircraft ground mass value Ms, communicated to a flight management system of the aircraft by a crew member of the aircraft or by an airline operating the aircraft, the communication taking place before a takeoff of the aircraft from a departure airport to a destination airport. The complex of drug and carbon nanohorns comprises a steroidal or metal-containing drug being adsorbed onto the oxidized carbon nanohorns, or included in pores opened thereof. Each chart model may be utilized to render a corresponding chart.