Maintenance and Monitoring Systems: ACMS Data Use and FDM Safety Analytics

022-14-03Pablo Asensio Martínez2026-03-271 min

Aeroplane Condition Monitoring System (ACMS)

ACMS (Airbus refers to it as AIDS - Aircraft Integrated Data System) monitors aircraft systems to identify maintenance needs and anticipate failures.

  • Function: Continuously or periodically measures system parameters (Engines, APU, Flight Controls, etc.).
  • Transmission: Data can be transmitted automatically via Datalink (ACARS) to the operator's Maintenance Control Center without crew notification, or printed on the flight deck.
  • Goal: Predictive maintenance and troubleshooting.

Flight Data Monitoring (FDM)

FDM is a systematic method of accessing, analyzing, and acting upon information obtained from digital flight data records of routine daily operations. It is a requirement for operators of aircraft > 27,000 kg.

  • Purpose: To improve Flight Safety and operational efficiency.
    • Identify potential risks and adverse safety trends.
    • Modify and tailor pilot training programs.
  • Principles:
    • Non-Punitive: Data is used for safety, not discipline.
    • Anonymous: Data is de-identified, except in cases of "grave exceedances" where further investigation is warranted.
Written and reviewed by

Pablo Asensio · 2026-03-27

Aeronautical engineer. Passed the thirteen EASA ATPL(A) theoretical knowledge exams studying from these very notes. Writes and reviews each topic against the Part-FCL Learning Objectives.

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