# NTSB Accident ANC16LA010
> **ROBINSON HELICOPTER COMPANY R44 II** · 2015-12-16 · Valdez, AK, USA · NONE
## Event
- **NTSB number:** ANC16LA010
- **Event ID:** 20151217X15124
- **Type:** Accident
- **Date:** 2015-12-16
- **Location:** Valdez, AK, USA
- **Coordinates:** 61.134166, -146.24472
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** ROBINSON HELICOPTER COMPANY
- **Model:** R44 II
- **Registration:** N255VS
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The overhaul facility’s improper and excessive use of an approved lubricant during overhaul of the fuel injection servo, which resulted in a disruption of fuel flow and a total 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=ANC16LA010) · AI Analytics · CC0 1.0*