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Engine Health and Vibration Monitoring

Engine Health and Vibration Monitoring systems provide the data required to support condition-based maintenance and "power-by- the-hour" commercial frameworks. They can also tell the pilot or maintenance crew if the engine rotors are out of balance (a mandatory requirement for passenger-carrying jet-powered civil aircraft).

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We can provide a monitoring solution that meets your specific requirements. Enquire Now.

See inside your engine

The majority of current transport aircraft rely on our engine vibration monitoring systems to monitor the condition and health of their engines.

These EVM systems also enable cold fan trim balancing based on data acquired in-flight – saving maintenance time and costs.

Download our new app – just search for “AeroEng MSS” on the Apple App Store.

Typical EVM system architecture

A typical system architecture, consists of:

  • Two engine mounted piezo-electric sensors (one directly installed on the fan bearing and one mounted on the turbine casing).
  • Low noise cable assemblies/remote charge converters to reliably convey the vibration signal up to the EVM
  • A front panel display on the EVM or cockpit maintenance terminal allowing operators to easily access system BITE messages, measured vibration values, fan and LPT balancing recommendations (amongst others)
  • A front panel maintenance connector providing raw signals for engine troubleshooting and also allowing the upload and download of operational software

We have the in-house capability and experience to provide the complete system including engine sensor suite, cabling, signal conditioning, data processing and integration with aircraft systems.

Other engine monitoring systems include:

Advanced insight into engine health

The EMU collects information from multiple sensors and communicates with engine control system to perform advanced trending, monitoring, and prognostic functions.

EMU also provides direct information to the cockpit displays for Vibration engine vibration monitoring.

Our latest EMU designs are on are in service on the T900, T1000, GP7200, TXWB, GenX-1B, GenX-2B, and PD14 engines.


The EICU/EIPM provides an interface between the engine and the aircraft and is a key part of the engine condition-monitoring system.

It monitors and manages the power and communication of the engine-mounted equipment such as the EMU, EEC and FADEC, as well as sending control signals to the engine ignition, thrust reverser and other functions.

Applications include: C919, ARJ21 and A380.


Our EIVMU combines two units into one line replacement unit (LRU) – saving space and weight.

  • advanced bearing failure detection algorithms support the airline’s predictive maintenance programmes
  • common hardware platform is compatible with all engine/aircraft configurations

Applications include: A330/340 family.

To increase passenger comfort and improve durability, we have developed a propeller-balancing system. It is based on our latest AGILE new modular electronic processing unit.

The propeller-balancing system is comprised of:

  • one vibration monitoring computation unit (VMCU)
  • one single axis accelerometer per propeller
  • one ground support software (GSS) running on standard PC – supporting the display and analysis of acquired data, as well as the configuration of equipment

Applications include: ATR 42 & 72.

Debris in the lubricating system resulting from component damages can cause irreversible system failure (e.g. of the gearbox or engine), which generates high costs to the operators.

Meggitt’s oil debris monitoring system, made of strategically located magnetic chip detectors in the oil system and a monitoring and power unit called the Chip Detector Power Unit CDPU), detects metallic particles in the lubricating oil. The system either burns the metallic parts, with or without a pilot command, or alerts the crew by illuminating a light in the cockpit for further investigations on the ground.

Our oil debris monitoring systems are widely used on gas turbine engines and various fixed-wing and rotary-wing aircraft gearboxes to prevent system failure or unscheduled downtime.

Features and benefits

  • No tools are needed to inspect and remove debris
  • Strong magnet integrity providing high ferrous capture efficiency and significant retention strength
  • Flow directional screens to improve capture efficiency
  • Increasing chip burning pulse power, allowing to differentiate average chip size
  • Temperature switch integrated in chip detector self-closing valve to halt “fuzzburn” operation if the gearbox oil temperature rises above a pre-set limit
  • Axial design that improves capture efficiency and ease of chip removal
  • Reduces or eliminates nuisance indications

AGILE – smart condition monitoring

Aerospace products monitoring the future

Balanced engines: achieved EVM solutions

Engine vibration and health monitoring systems

High Temperature Sensors for Turbine Engine Testing

High Temperature Piezoelectric (HTPE) Accelerometers for high temperature vibration monitoring in harsh gas turbine environments.

  • +900°F (+482°C) continuous operation
  • Charge sensitivity of 50 pC/g
  • Rugged design with various length integral braided hardline cables and connectors.
  • The 6240M4/5X/6X series provides a balanced differential output isolated from case ground for use with differential charge amplifiers. Designed to accept a 100KΩ; source resistance.
  • Fully complaint to the European Union’s Low Voltage, EMC and RoHS directives.
Part Number Download
6240M4X, 5X, 6X

We offer a vast know-how from analogue pre-processing electronics through to state-of-the art digital signal processing and diagnostics software.

We design and manufacture the total system (vibration accelerometers, hardware and software) thus ensuring the best performance and reliability throughout the overall measurement chain.

Features and benefits

  • Installed in the aircraft electronic bay
  • Broadband vibration monitoring
  • Narrowband (tracking) vibration monitoring
  • Cold fan trim balancing
  • Advanced bearing monitoring algorithms
  • Gearbox vibration monitoring.


  • Our engine vibration monitoring systems are used on nearly all civil transport aircraft
  • Advanced airborne vibration monitoring unit (AAVM) standard fit on many civil transport aircraft
  • Integrated engine vibration monitoring unit (IEVM) specifically designed for integration with modular avionics for vibration monitoring in regional aircraft and high-end business jets

Key customers

Our 60+ years of sensor and system expertise means our solutions are trusted by original equipment manufacturers (OEMs) around the world. We work hand in hand with the engine OEMs to tailor cost-effective solutions to each application.

For more information, please contact us.

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