Locking device and sliding door with locking device

A sliding door, in particular for an aircraft comprising:

• a door frame,
• a door leaf that is displaceable between an open position and a closed position relative to the door frame, and
• a locking device for locking the door leaf to the door frame, wherein the locking device comprises a catch element,
• wherein the catch element comprises a first latching recess with a latching unit for fastening to the door leaf or door frame,
• wherein the latching unit comprises a first latching body for engagement with the at least one latching recess of the catch element,
• wherein the latching unit comprises a release element which comprises a first receiving opening for receiving the first latching body,
• wherein the release element is moveable between a resting position, which arranges the first latching body in the first latching recess of the catch element and in the receiving opening of the release element, and a release position, which releases the engagement between the first latching body and the first latching recess of the catch element.
• wherein the catch element is designed as an oblong flat part, and the first latching recess is provided on a first longitudinal edge of the oblong flat part.