FAU-39 is an electronic device which can be installed in the center of gravity of an aircraft to monitor the vertical acceleration of the aircraft.
During the system operation, the FAU-39 unit records into its internal solid-state memory to following parameters:
- Aircraft basic information (type, reg. makrs, S/N, etc…)
- Number of flight hours
- Number of landings
- Aircraft vertical acceleration value, which exceeded predefined positive or negative limits of vertical acceleration as well as the time when event ocurred
- Difference between two successive relative extreme values of vertical acceleration in form of Peak/Valley frequency matrix
