Aeris 3A
From Kerbal Space Program Wiki
The Aeris 3A is a small low altitude stock plane. With the new SAS in version 0.21 it has become more controllable, as it can lock the craft in the current position.
It is impossible to use the ladder placed on the cockpit's side because it goes through the control surface unable to be passed by a kerbal.
It uses one Basic Jet Engine and is fuelled by 300 liters of jet fuel.