An equipment-fastening device EFD to enhance the crash safety of aircraft, for fastening a piece of equipment to a support structure of an airframe, includes a load-limiting release mechanism and a load-peak transformer connected to the release mechanism and having a load-limiting, impact-energy-absorbing deformation element. Load peaks that occur in case of a crash and that stem from equipment fastened to the support structure by means of the equipment-fastening device are first reduced to a residual load peak by the EFD after the release, thereby relieving the stress on the support structure. Only then is any residual load peak that might still remain introduced via a first fastening section of the EFD into the support structure with a time delay vis-à-vis the load peaks that occurred originally.