{"status": 400, "message": "Please give at least one parametter in the query string", "possible_parametter": {"real_alt": "Altitude of the AD (not pressure altitude). Default: 0", "pressure": "Sea-level pressure at the AD. Default: 1013", "mass": "Mass of the loaded aircraft (incl passagers, fuel and baggages). Default: 900", "temp_std": "Diff with standard temperature (15 on sea level). If the temp is 30 at sea level, put '15'. Default: 0", "aircraft": "Registration of the aircraft. Default: F-GJQU", "wind": "Head wind on TKOF/LDG. Default: 0", "avail_toda": "Length of runway we want to take of from (will compute needed wind). Need rwy_type", "avail_lda": "Length of runway we want to land on (will compute needed wind). Need rwy_type", "rwy_type": "Type of runway we want to land/take of from (hard or grass). Required if avail_lda|toda"}}