# NTSB Accident ERA14LA311
> **ROBINSON HELICOPTER COMPANY R44 II** · 2014-06-24 · Nashville, TN, USA · NONE
## Event
- **NTSB number:** ERA14LA311
- **Event ID:** 20140624X00629
- **Type:** Accident
- **Date:** 2014-06-24
- **Location:** Nashville, TN, USA
- **Coordinates:** 36.206943, -86.889442
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** ROBINSON HELICOPTER COMPANY
- **Model:** R44 II
- **Registration:** N544BS
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s failure to maintain rotor rpm during an autorotation after a perceived partial loss of power, which resulted in a hard landing. Contributing to the accident was radio frequency interference with the governor controller, which resulted in an uncommanded decrease in throttle and the perceived loss of engine power.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA14LA311) · AI Analytics · CC0 1.0*