# NTSB Accident WPR14TA236
> **MCDONNELL DOUGLAS HELICOPTER 369E** · 2014-06-08 · Mesa, AZ, USA · NONE
## Event
- **NTSB number:** WPR14TA236
- **Event ID:** 20140608X15119
- **Type:** Accident
- **Date:** 2014-06-08
- **Location:** Mesa, AZ, USA
- **Coordinates:** 33.377223, -111.79528
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** MCDONNELL DOUGLAS HELICOPTER
- **Model:** 369E
- **Registration:** N504MP
- **FAR Part:** PUBU
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** NITE
- **Weather:** VMC
## 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 coupling components due maintenance personnel’s placement of an incorrect shim during a compressor section overhaul and a latent misalignment within the exhaust collector.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR14TA236) · AI Analytics · CC0 1.0*