Reference N1 Bugs  (Note: Orange and blue circles are for illustrative purposes only.)

Displayed (green) – with N1 SET outer knob in AUTO, 1, 2 or BOTH position indicated by
the blue circle.

Position corresponds to digital value on the Reference N1 readout.

Reference N1 Readouts

Displayed (green) – Indicated by the orange circle.

  • Manually set N1% RPM when N1 SET outer knob is in the BOTH, 1, or 2 position.

  • Displays  – – – –  when the N1 SET outer knob is in the AUTO position and FMC
    source is invalid.

  • When the N1 SET outer knob is in the AUTO position, may indicate fixed derate,
    assumed temperature derate, or a combination of fixed and assumed temperature
    derate