COBHAM S-TEC Thirty, Руководство по эксплуатации для пилотов

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3-8 3rd Ed. Feb 15, 07
S–TEC
3.1.5.2 System Thirty ALT
Maneuver the aircraft to the desired altitude. Engage the altitude hold mode.
The ALT ON lamp will be illuminated as shown in Fig. 3-6, to acknowledge that
this mode is engaged. The autopilot will hold the aircraft at its current (captured)
absolute pressure altitude.
Fig. 3-6. ALT HOLD ON/OFF Switch Display, ALT HOLD Mode Engaged
(System Thirty ALT)
3.1.6 Manual Elevator Trim Prompts, System Thirty / Thirty ALT
3.1.6.1 System Thirty
If the altitude hold mode is engaged, then the autopilot will provide a prompt
whenever it is necessary to manually trim the aircraft about the pitch axis using
the Elevator Trim Wheel.
Should the pitch servo loading exceed a preset threshold for a period of three
seconds, either the TRIM UP lamp or TRIM DN lamp will become illuminated, as
a prompt to trim the aircraft in the indicated direction. This is shown in Fig. 3-7.
In addition, an audible alert will sound a steady tone. If no action is taken after
four more seconds, then the lamp will flash and the audible alert will become
periodic. Once the aircraft has been sufficiently trimmed, such that the pitch
servo loading is below the preset threshold, the lamp will extinguish and the
audible alert will be squelched.
3.1.6.2 System Thirty ALT
If the altitude hold mode is engaged, then the autopilot will provide a prompt
whenever it is necessary to manually trim the aircraft about the pitch axis using
the Elevator Trim Wheel.
Should the pitch servo loading exceed a preset threshold for a period of three
seconds, either the UP lamp or DN lamp will become illuminated, as a prompt
to trim the aircraft in the indicated direction. This is shown in Fig. 3-8. In
addition, an audible alert will sound a steady tone. If no action is taken after four
more seconds, then the lamp will flash and the audible alert will become
periodic. Once the aircraft has been sufficiently trimmed, such that the pitch
servo loading is below the preset threshold, the lamp will extinguish and the
audible alert will be squelched.