 The F-14's wing sweep can be varied between 20° and 68° in flight, and can be automatically controlled by the Central Air Data Computer, which maintains wing sweep at the optimum lift-to-drag ratio as the Mach number varies; pilots can manually override the system if desired.When parked, the wings can be "overswept" to 75° to overlap the horizontal stabilizers to save deck space aboard carriers.In an emergency, the F-14 can land with the wings fully swept to 68°, although this presents a significant safety hazard due to greatly increased stall speed.