Engine Control Unit (ECU)
Engine Control Unit (ECU)
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29.Apr.2025
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SKYbrary Aviation Safety. (April 29, 2025). Engine Control Unit (ECU).
Retrieved June 4, 2026
from https://skybrary.aero/articles/engine-control-unit-ecu
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Definition
Engine Control Unit (ECU) is synonymous with Full Authority Digital Engine Control (FADEC). Please see the FADEC article for a more complete description.
Description
An ECU or a FADEC receives data from engine system and air data sensors to control functions such as:
- Fuel metering
- Bleed valve control
- Engine RPM limits
- Ignition for engine start and in-flight restart
- Turbine temperature limits
An ECU or FADEC typically offers protection for malfunctions such as:
- Hot start
- Hung start
- No light-off
- Engine overspeed
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