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Airbus H145 (BK117 D-2) · Troubleshooting

Warnings & faults

Tap a warning light or message to see what it means, what usually causes it, what the pilot does and what the mechanic checks.

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warningATA 71 Power Plant

ENG 1 FIRE

Fire detected in the No.1 (Arriel 2E) engine bay. Red CAS message, master warning, aural tone.

WARNING — immediate action. Red level: something that can quickly become dangerous. Act on it now, in the order given.

Where it is

Location of Powerplant / fire protection
Powerplant / fire protection

What it looks like

Arriel 2E installation
Arriel 2E installation · illustrative image

How to recognise it

  • Annunciator / CAS message: 'ENG 1 FIRE'
  • Master Warning (red) flashing and aural tone (bell/clacker/gong).
  • Abnormal gauge reading or system behavior.
  • Warning light on the main panel.

How to manage it

Recognition

  1. 1.Annunciator / CAS message: 'ENG 1 FIRE'
  2. 2.Master Warning (red) flashing and aural tone (bell/clacker/gong).
  3. 3.Abnormal gauge reading or system behavior.
  4. 4.Warning light on the main panel.

Technique

  1. 1.Aviate: Fly the aircraft first. Keep it level and at a safe speed.
  2. 2.Navigate: Point the aircraft away from terrain and toward a safe landing area.
  3. 3.Communicate: Tell the other pilot (or ATC) what is happening.
  4. 4.Checklist: Only then start the emergency checklist or memory items.

Likely causes

  • Fuel or oil leak onto a hot section
  • Bleed duct failure
  • Detection loop fault (rare false warning)

Know the system

  • Two Arriel 2E engines with dual-channel FADEC; losing one leaves the aircraft in OEI (one engine inoperative) flight with time-limited 30-sec/2-min/continuous ratings shown on the FLI.

Crew technique

  • Follow the RFM emergency/malfunction procedure for the message; apply memory items (e.g., engine fire, OEI, tail rotor drive failure) immediately, then confirm with the checklist.
  • Single-pilot technique: keep one hand on the collective/cyclic at all times, say each action aloud, and only move a critical switch (fuel shutoff, fire handle, GEN/HYD switch) after a deliberate identify-confirm-action sequence.
  • Two-crew/HEMS ops: PM reads the CAS/checklist and backs up PF's selections; brief the landing site and category (land immediately / as soon as possible / as soon as practicable) early.

Don't

  • Do not rush — wrong switches in a hurry cause more accidents than the original fault.
  • Do not continue the flight hoping it goes away.
  • Do not reset a circuit breaker more than once.

After landing — maintenance

  • Fire loop and detector test
  • Engine bay and fire sleeve inspection
  • Bottle replacement/recharge
  • Write the fault in the aircraft technical log with time, phase of flight and indications.
  • Maintenance checks the aircraft and downloads data (FADEC/Mission Computer) before the next flight.

REF: H145 RFM — Engine Fire

EDUCATIONAL USE ONLY. Content is summarised from manufacturer documentation for learning. It is not approved flight or maintenance data. Always use the current, aircraft-specific POH/AFM, FCOM, QRH, AMM and operator procedures.