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EICAS primary engine parameter display

Aviation Mechanic Powerplant (AMP) practice question 10 of 12 on Engine Instrument Systems. ACS element AM.III.D.K8 · difficulty: recall. Want to answer it in a timed quiz? Use the Aviation Mechanic Powerplant (AMP) practice mode.

Question bank updated 2026-09-22

QUESTIONIn an engine indicating and crew alerting system (EICAS), where are primary engine parameters such as EPR, N1 and EGT displayed full time?

  1. AOn the top, primary monitor
  2. BOn the lower system status screen
  3. COn the display select panel
Show the answer and explanation

Correct answer: A. On the top, primary monitor

  • A — correct EICAS provides full-time primary engine parameters on the top, primary monitor, where advisories and warnings also appear.
  • B — incorrect The lower screen carries secondary engine parameters and nonengine system status, and is used for maintenance diagnosis on the ground.
  • C — incorrect That panel lets the crew choose the active computer and the lower-screen content; it is not where the parameters are presented.

BACKGROUND

An engine indicating and crew alerting system (EICAS) monitors aircraft systems for the pilot and displays both engine and airframe parameters. It is a two-monitor, two-computer system with a display select panel; both monitors take information from the same computer while the second computer stands by. Primary engine parameters, including engine pressure ratio (EPR), N1 and exhaust gas temperature (EGT), are shown full time on the top, primary monitor along with advisories and warnings. Secondary engine parameters and nonengine system status appear on the bottom screen, which also serves maintenance diagnosis when the aircraft is on the ground. EICAS automatically records the parameters of a failure event for later review, and the crew can press an event record button to capture a period they suspect is abnormal.

STUDY TIP

Split the two EICAS screens in your memory: primary engine parameters and alerts on top, secondary parameters and system status below.

KEY POINTS

  • EICAS shows EPR, N1 and EGT full time on the top, primary monitor.
  • Secondary engine parameters and system status appear on the lower screen.
  • Failure events are recorded automatically for later maintenance review.

SOURCES

  • FAA-H-8083-31B ch10 "Engine Indicating & Crew Alerting System (EICAS)"
Practice the Aviation Mechanic Powerplant (AMP) test →Timed 100-question exam, by ACS area, or review your misses. Free.
MORE ON ENGINE INSTRUMENT SYSTEMS

SkyDrill is not affiliated with the FAA. This is an original practice item based on FAA-H-8083-32B Aviation Maintenance Technician Handbook – Powerplant, and 14 CFR part 43. Regulations and handbooks are revised; confirm details against the current edition.