# Flight Monitoring

> Routine checks and monitoring procedures during flight.

- **Subject:** 033 — Flight Planning Monitoring
- **Section:** 033-06 — Flight Monitoring and In-flight Re-planning
- **Topic code:** 033-06-01
- **Last reviewed:** 2026-04-01
- **Author:** Pablo Asensio Martínez
- **HTML version:** https://pilotsyllabus.com/en/flight-planning-monitoring/flight-monitoring-and-in-flight-re-planning/flight-monitoring/

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## Navigation Monitoring
*   **Track Check**: Confirming aircraft position relative to planned track every 15-30 mins.
*   **ETA Updates**: Revising Estimated Time of Arrival at next waypoints based on actual Ground Speed.
*   **Gross Error Check**: Verifying next waypoint distance and track before passing current waypoint.

## Fuel Monitoring
*   **Fuel Checks**: Comparing *Actual Fuel on Board* vs *Planned Fuel* at each waypoint.
*   **Discrepancy**:
    *   If burning more than planned: Determine cause (wind, higher level, engine issue).
    *   Project future consumption to ensure destination reserves are intact.
*   **Top of Climb Check**: Critical check to verify climb performance and initial cruise fuel flow.

## System Monitoring
*   **Engine Instruments**: Oil pressure/temp, EGT, N1/N2 within limits.
*   **Pressurization**: Cabin altitude climbing/descending correctly.
*   **Electrical/Hydraulic**: Loads and pressures normal.

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Free study notes from pilotsyllabus.com. Not a substitute for training at an approved ATO.