Twin-wheel steerable nose unit retracts forward. Four-wheel bogie main units retract inward. Dunlop carbon disc brakes. SPAD anti-skid units. Retractable tail bumper.
Fuel system is used also as heat sink and to maintain aircraft trim.
Main group comprises five tanks in each wing and four tanks in fuselage and maintains CG automatically in cruising flight. This group maintains correct relationship between CG and aerodynamic centre of pressure by transferring fuel rearward during acceleration and forward during return to subsonic flight. Four pressure refuelling points in bottom fairing, two forward of each main landing gear unit. Accommodation Pilot and co-pilot side by side on flight deck, with third crew member behind on starboard side. Provision for supernumerary seat behind pilot.