3.10.10 BACKUP INSTRUMENT MALFUNCTION
• Sensor failure
If any internal sensor fails, the corresponding parameter on the display will
remain in the Red-X’ed state. If this occurs, the unit must be returned to the
factory for service.
• Memory error
On power-on, the unit performs a self-test of the calibration and setup
parameters stored in nonvolatile memory. If this test fails, a red MEMORY ERROR
message is displayed and the instrument becomes inoperable. If this occurs, the
unit must be returned to the factory for service.
• Degraded Attitude
During mode, errors in pitch or roll may be observed during long accelerations
or decelerations, however attitude information is always available - it is never
removed or made un-available. Errors will not exceed TSO limit specifications.
When a cross check message is present the KI 300 is considered to be in
degraded mode. The TSO tested maneuvers represent typical flight. Degraded
mode may occur if a pilot maintains an accelerated frame of reference (i.e. turns)
for greater than 3 minutes. Degraded Mode maintains basic attitude
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