Health and usage monitoring systems ( HUMS ) is a generic term given to activities that utilize data collection and analysis techniques to help ensure availability , reliability and safety of vehicles . Activities similar to , or sometimes used interchangeably with , HUMS include condition-based maintenance ( CBM ) and operational data recording ( ODR ) . This term HUMS is often used in reference to airborne craft and in particular rotor-craft – the term is cited as being introduced by the offshore oil industry after a commercial Chinook crashed in the North Sea , killing all but one passenger and one crew member in 1986
commercial Chinook crashed in the North Sea
1986 British International Helicopters Chinook crash
Health and usage monitoring systems