Description

A limited range of electromechanical instruments are normally provided as back-up; alternatively, electronic standby flight instrument displays may be provided. Standby systems are fed from independent power supplies and sensors to ensure continuity of operation in the event of main system failure.

Standby Attitude Indicator

A self-contained, two coloured moving drum indicating aircraft attitude.

Standby Turn and Slip Indicator

A self-contained Turn and Slip, gyro driven rate of turn/slip indicator, with power warning flag

Standby Compass

A conventional wet compass suspended in damping fluid used as a backup magnetic heading reference. Normally mounted in the forward window, away from metal and sources of electro-magnetic interference. Commonly accurate to within 10 degrees of magnetic north.

Clock

A combined mechanical Clock/Stopwatch with hands for hours, minutes, seconds, and time elapsed.