# Accident 20140608010449A: Mcdonnell Douglas Helicopter 369E, Gilbert, AZ, June 8, 2014

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 8, 2014, 01:05 local time
- Place: Gilbert, AZ
- Damage: Substantial damage
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 33.3772° N, 111.7953° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=33.3772&lon=-111.7953&mi=10
- Aircraft: N504MP (not matched to a registry record)
- Reported make and model: MCDONNELL DOUGLAS HELICOPTER 369E
- Reported engine: ROLLS-ROYC 250
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 2
- Pilot certificates: Commercial pilot
- Pilot flight hours: 825 total, 825 in this make and model, 150 in the last 90 days
- NTSB investigation: [NTSB WPR14TA236](https://openairdocs.org/ntsb/WPR14TA236) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20140608010449A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON 06/08/2014 AT 0105 LOCAL TIME, MESA POLICE DEPT HELICOPTER N504MP EXPERIENCED A LOSS OF POWER DURING FLIGHT. PILOT REPORTS ENGINE BEGAN TO SLOWLY "SPIN DOWN" AT WHICH POINT HE ENTERED AN AUTOROTATION TO AN UNLIT OPEN FIELD. PILOT REPORTS THEY WERE IN A CRUISE CONFIGURATION AT APPROXIMATELY 500-700 FEET AGL AND 60-70 KIAS AT TIME OF POWER LOSS. UPON TOUCHDOWN, THE TAIL OF THE HELICOPTER IMPACTED THE GROUND WHICH CAUSED THE MAIN ROTOR BLADES TO IMPACT THE TAIL CONE. THE TAIL ROTOR SECTION OF THE BOOM SEPARATED FROM THE AIRCRAFT. THE AIRCRAFT LANDED UPRIGHT AND THERE WAS NO FURTHER DAMAGE.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR14TA236](https://openairdocs.org/ntsb/WPR14TA236), Jun 8, 2014: Mcdonnell Douglas Helicopter 369E (N504MP), Mesa, AZ, substantial damage. Probable cause: The loss of engine power during cruise flight due to the decoupling of the engine’s turbine and compressor sections. Contributing to the decoupling was the excessive wear of the turbine-to-compressor…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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