Definition
The ongoing process of observing engine instruments and indications during flight to confirm the powerplant is operating within normal limits and to detect any abnormal trends or values that could indicate a developing problem.
Plain English
Keeping an eye on the engine gauges throughout the flight to make sure the engine is running normally and to catch any early warning signs of trouble.
Context Anchor
Seen when using electronic flight displays that include engine information, especially during engine start, takeoff, climb, cruise, and descent.
Derivation
“Monitor” comes from a Latin word meaning “to warn” or “to remind.” That fits the aviation use: engine monitoring is not just looking at numbers, but using them to notice early signs that something may need attention.
Why Pilots Care
Allows early detection of engine issues and supports safe decision-making when visual references are unavailable.
Intuition Check
Engine monitoring does not mean the airplane is automatically managing the engine for you. It means the pilot is checking the displayed engine information and acting if something is outside the normal range.
Example Sentence 1
During cruise, the pilot's engine monitoring scan caught a slow drop in oil pressure, prompting an early diversion to the nearest airport.
Example Sentence 2
The EFD combined attitude data with engine monitoring so the pilot could maintain both aircraft control and power settings.