| Collins MCP |
| Mode Control Panel |
SPEED Switch
Push – (light not illuminated)
Push – (light illuminated)
Push – (light not illuminated)
- Engages A/T in SPEED mode if compatible with engaged
AFDS modes. - Illuminates SPEED switch light.
- Annunciates MCP SPD autothrottle mode.
- Maintains speed in the MCP IAS/MACH display.
Push – (light illuminated)
- Deselects speed mode and extinguishes switch light
- Engages A/T in ARM mode.
Speed Mode
Autothrottle holds speed in the IAS/MACH display or a
performance or limit speed. Speed mode is engaged manually by
pushing the SPEED switch if the speed mode is compatible with
existing AFDS modes. Speed mode engages automatically when:
A/T does not set thrust above displayed N1 limit, however, A/T can
exceed N1 value manually set by N1 Manual Set Knob.
Autothrottle holds speed in the IAS/MACH display or a
performance or limit speed. Speed mode is engaged manually by
pushing the SPEED switch if the speed mode is compatible with
existing AFDS modes. Speed mode engages automatically when:
- ALT ACQ engages
- ALT HOLD engages
- V/S engages
- G/S capture occurs.
A/T does not set thrust above displayed N1 limit, however, A/T can
exceed N1 value manually set by N1 Manual Set Knob.
