Model WTJ4400TKT Boarding Stair the height from platform to the ground is 2500～4400mm，suitable for boarding aircraft type A318, A319, A320, A321, A330, A340, B707, B727, B737, B757, B767, DC-8/40/50F, DC8- 61/61F, DC8-62/62F, DC8-63/63F, 1L-18.

• Boarding Stair Raising / Lowering：Using manpower operating the hydraulic
  hand pump
• Boarding Stair Base Stand：Hand operated screw type
• Boarding Stair Moving Method：Hand push or Towing
• Towing or pushing force less than 30Kg
• Night lamp provided
• Capacity: 48 passengers
• Stair, platform, step dimension according to SAE ARP836B requirement
• Safety requirement meet AHM913.