Door assemblies for ground support tractors

A ground support tractor comprising:

• a wheeled chassis;
• a cabin mounted on the wheeled chassis;
• and
• a door assembly coupled to the cabin, the door assembly including:
• a lower track having a ramp;
• and
• a door slidably received by the lower track and translatable in a first direction relative to the cabin between a closed position and an open position, the door including a main panel and a closeout panel that is translatable relative to the main panel in a second direction between an extended position and a retracted position, the second direction substantially normal to the first direction;
• wherein, the ramp is configured to apply a retraction force to the closeout panel that causes the closeout panel to translate from the extended position to the retracted position responsive to the door translating from the closed position to the open position.

A ground support tractor comprising:

• a wheeled chassis;
• a cabin mounted on the wheeled chassis;
• and
• a door assembly coupled to the cabin, the door assembly including:
• a lower track having a ramp;
• and
• a door slidably received by the lower track and translatable in a first direction relative to the cabin between a closed position and an open position, the door including a main panel and a closeout panel that is translatable in a second direction relative to the main panel between an extended position and a retracted position, the second direction substantially normal to the first direction, the closeout panel having a lift surface;
• wherein, the closeout panel is in the extended position when the door is in the closed position;
• wherein, the closeout panel is in the retracted position when the door is in the open position;
• wherein, the closeout panel translates from the extended position to the retracted position responsive to contact between the lift surface and the ramp as the door translates from the closed position to the open position;
• and
• wherein, the closeout panel translates from the retracted position to the extended position as the door translates from the open position to the closed position.