20
Rate of climb performance typically diminishes with increases in al-
titude.
NOTE: Always be sure the selected vertical speed is within the
capability of the airplane for the existing conditions. Reduce the
commanded vertical speed when the indicated airspeed falls be-
low the best rate of climb speed for the altitude you are passing
through.
Emergency Procedures
The Altitude Selector/Alerter provides only switching information to
the autopilot and cannot contribute to an autopilot malfunction. If for any
reason, the Altitude Selector/Alerter does not function properly, push the
MAN (Manual) button on the Altitude Selector/Alerter. This will com-
pletely remove the Altitude Selector/Alerter from the autopilot system.
Do not attempt further use until the fault has been corrected. The Alti-
tude Selector/Alerter is a low power device which is essentially dormant
unless actually in use (by selection of the VS and ALT modes on the
autopilot simultaneously). It is powered by the autopilot circuit breaker.
The autopilot altitude hold mode (ALT) will override the Altitude Selec-
tor/Alerter when the ALT mode is manually selected by depressing the
ALT switch on the autopilot programmer.