Type 3656-A

Safran Helicopter Engine Vibration Kit

Vibration toolkit for field inspection of all helicopter engine families produced by Safran Helicopter Engines.

Solicitar oferta

Safran Helicopter Engine Vibration Test Kit Type 3656-A is designed for field inspection of all Safran helicopter engine families. Vibration test measurements are performed according to the respective maintenance manual.

Type 3656-A has been developed by Brüel & Kjær in close collaboration with Safran, a leading helicopter engine manufacturer.

The test kit comprises a vibration meter (with measurement templates for all Safran engines), a high-temperature accelerometer, and a 10 m cable, all packed in a handy shoulder bag.


  • Standard: Vibration check during a run-up from engine START to FLIGHT
  • High N1/NGG rate: Vibration check during a run-up from FLIGHT to the maximum speed of the gas generator reachable on ground (or in flight for Arriel® 1 single-engine helicopters after Deep Maintenance Intervention)


  • Immediate and unambiguous pass/fail decisions according to engine maintenance manual instructions
  • Recording and documentation of test data according to Safran requirements for easy interaction with Safran Services


  • Verifies overall vibration levels in a specific frequency range during engine run-up/high N1-NGG rate against allowable limits
  • Message if level limitations are exceeded
  • Safran templates for all engine families are included Meta-data annotation according to Safran requirements
  • Meta-data annotation according to Safran requirements
  • Designed for one hand operation and simplified operator user-interface
  • Requires only one transducer and one cable
  • No computer required during measurements
  • No tachometer connection required
  • Storage of results with full annotation including the raw signal for post-processing
  • Enhanced diagnostics can be carried out after the test by postprocessing the raw time signal
  • Easy reporting, data transmission and data export to consumer software
  • Long-life rechargeable battery operation (>8 hours)