A tray for an avionics bay, comprising a body and a recording device rigidly connected to each other in order to reduce the space requirement of acquisition systems on board an aircraft and dedicated to the prediction of failures. The recording device comprises a first input/output port to be connected to the avionics bay, a second input/output port to be connected to an item of electrical equipment, a data bus for routing signals between the first and the second input/output port, a collection member configured for acquiring at least some of the signals routed by the data bus between the first and the second input/output port, and a memory configured to store the signals acquired by the collection member.