Really designed for emergency use only though there is also an air brake system as well if the hydraulics fail. Many of the 35's I flew had the chute installed.

There has been at least one event where one deployed in flight. It should be hooked up such that even an accidental deployment would just throw out the chute without being attached to the aircraft. There is a hook or riser of sort that is supposed to catch the chute if you purposely use it. The mechanic had installed it incorrectly and the pilots did not catch it on preflight. When the chute deployed it was attached in such a way that they could not jettison it.