Browse the Glossary

Faildown

Faildown – The substitute display or backup instrument mode available if the primary component fails. In some systems, for example, the MFD can substitute for the PFD if the PFD fails. The PFD information fails down to the MFD – In other systems, the substitute for the PFD might be the conventional standby instruments and the standby or secondary navigation CDI.

Speak Your Mind