Definition
Cockpit instruments and gauges that display the operating condition of the engine, including parameters such as oil pressure, oil temperature, cylinder head temperature, exhaust gas temperature, fuel pressure, fuel flow, manifold pressure, and engine speed (RPM). The pilot uses these readings to confirm the engine is operating within its approved limits before and during flight.
Plain English
The dials, gauges, or digital readouts in the cockpit that show how the engine is doing — its temperatures, pressures, and speed — so the pilot can tell whether everything is running normally.
Context Anchor
Seen during preflight checks, engine start, run-up, takeoff, climb, cruise, and landing, whenever the pilot verifies that the engine is operating normally.
Derivation
Indicator comes from the Latin idea of pointing out or showing. That fits the aviation use because these instruments point out the engine’s condition to the pilot instead of requiring the pilot to guess.
Why Pilots Care
Confirming normal readings before flight verifies engine health and prevents departure with undetected problems.
Analogy
They are like the warning lights and gauges on a car dashboard, but for an aircraft engine and with much more direct importance to safe flight.
Intuition Check
Do not read engine indicators as parts of the engine itself. In this context, they are the cockpit gauges or display readings that report what the engine is doing.
Example Sentence 1
After starting the engine, the pilot checked the engine indicators to confirm oil pressure rose into the green arc within 30 seconds.
Example Sentence 2
Abnormal engine indicators after start prompted the pilot to shut down and inspect the aircraft.