BLEED AIR HEATER AND DEFROSTER WITH AIR NOISE SUPPRESSIONS FIRE EXTINGUISHER TWO PLUG-IN SLIDING DOORS FOR PASSENGER CABIN ACCESS WITH 4 LOCKING LATCHES PASSENGER DOORS STOP IN FULLY OPEN POSITION WHEELED RETRACTABLE TRICYCLE LANDING GEAR (2 WHEELS ON NOSE GEAR AND BRAKES ON MAIN LANDING GEAR) HOISTING AND JACKING FITTINGS 2 ANTI-VIBRATION MASSES UNDER CABIN FLOOR