Definition
An electronic engine control system in which a digital computer has complete authority over engine operation, managing fuel flow, ignition timing, and other parameters without mechanical backup. The system receives data from engine sensors and pilot inputs, then commands the engine to deliver the requested performance while protecting it from exceeding operating limits.
Plain English
A computer that runs the engine. The pilot tells it what they want, and the computer handles the details — fuel, timing, and limits — to make the engine respond correctly and safely.
Context Anchor
Seen in powerplant discussions, modern turbine engines, some advanced piston engines, and maintenance procedures for electronically controlled engines.
Derivation
‘Full-authority’ means the computer has total control, with no mechanical override. ‘Digital electronic’ distinguishes it from older analog or hydromechanical systems. The name describes exactly what it is: a digital computer with full command of the engine.
Why Pilots Care
Delivers precise engine management, improved fuel efficiency, automatic fault protection, and lower pilot workload.
Intuition Check
Full-authority does not mean the system can ignore engine limits or create unlimited power. It means the electronic control system has complete command over the engine functions assigned to it.
Example Sentence 1
On FADEC-equipped engines, the pilot moves a single power lever and the computer handles fuel scheduling and ignition automatically.
Example Sentence 2
During preflight the pilot verified that the FADEC had completed its self-test with no faults displayed.