To the GOV lights.
Assuming that the B3 and B4 share the same powertrain and controls.
On the latest Transition course manual (stamped 02.Oct.2006) for the B3:
A red GOV light means "Major governor failure"
Actions:
Emergency mode automatically self-engages.
(Yellow)GOV illuminates.
....and so on
A yellow GOV light means "Minor FADEC failure"
Action:
Governing function degraded: Avoid abrupt power changes .....
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