##### Maximum takeoff weight The heaviest [[weight]] an aircraft can have when it starts the [[Takeoff]] roll. The difference between this weight and the maximum ramp weight would equal the weight of the fuel that would be consumed prior to takeoff. The maximum takeoff weight (MTOW) or maximum gross takeoff weight (MGTOW) or maximum takeoff mass (MTOM) of an aircraft is the maximum weight at which the pilot is allowed to attempt to take off, due to structural or other limits. MTOW is the heaviest weight at which the aircraft has been shown to meet all the [[airworthiness]] requirements applicable to it. MTOW of an aircraft is fixed and does not vary with [[altitude]], air temperature, or the length of the runway to be used for takeoff or landing. Maximum permissible takeoff weight or regulated takeoff weight, varies according to flap setting, altitude, air temperature, length of runway and other factors. It is different from one takeoff to the next, but can never be higher than the MTOW. >Covered in: >Mentioned in: >References: [[WP MTOW|🌍]] >Required by: > >Related to: