Collins MCP
Mode Control Panel
N1 Switch

Push – (light not illuminated)

  • Engages A/T in N1 mode if compatible with AFDS modes
    already engaged.
  • Illuminates N1 switch light.
  • Annunciates N1 autothrottle mode.

Push – (light illuminated)

  • Deselects N1 mode and extinguishes switch light
  • Engages autothrottles in ARM mode.
N1 Mode

  • A/T maintains thrust at N1 limit selected from the FMC CDU.
  • N1 is mode engaged manually by pushing the N1 switch if N1
    mode is compatible with existing AFDS modes. N1 mode
    engages automatically when:
  • engaging LVL CHG in climb (except during inhibit period for
    2 1/2 minutes after lift-off)
  • engaging VNAV in climb.