An apparatus and a method allowing a pilot or more generally a crew to enrich a database of user obstacles directly inside the aircraft, on the ground and even during flight. Generally, the apparatus is based on a new software component, which allows new services to be provided for the functional avionic components and for the human machine interfaces HMI of the avionics. This new software component is configured to allow: user obstacles to be created, changed, deleted at the request of components of HMIs of the avionics; user obstacles to be sent to clients of the services of this new software component, which are either other functional components of the avionics or other components of HMIs of the avionics; user obstacles to be recorded to a nonvolatile memory and restored from this nonvolatile memory.