A front landing gear storage compartment for an airplane, which includes a set of retractable landing gears including a front gear centered on a longitudinal median plane of the fuselage. The storage compartment forms an impervious partition between a pressurized zone and the housing for the front gear in its retracted position, and includes a reinforced upper face including a substantially flat zone, which is substantially horizontal when the airplane is on the ground, so as to form a floor of a pressurized area of the airplane.