Where does the VIB icon appear when vibration limits are displayed?

• A. Inside the N1 gauge
• B. In the maintenance log
• C. On the engine display
• D. Inside the N2 gauge

Answer: (D)

Vibration data are tied to the engine’s high-speed spool, so the display groups this health indicator with the N2 information. When vibration limits are being shown, the VIB icon appears inside the N2 gauge to give a clear, immediate cue about vibrational status right alongside the N2 reading. Placing it in other areas would separate it from the related parameter set (N2), and the maintenance log is not a live display.