# NTSB Accident ANC22FA018
> **SIKORSKY S-61N** · 2022-02-22 · Kekaha, HI, USA · FATL
## Event
- **NTSB number:** ANC22FA018
- **Event ID:** 20220222104681
- **Type:** Accident
- **Date:** 2022-02-22
- **Location:** Kekaha, HI, USA
- **Coordinates:** 22.040149, -159.78055
## Injuries
- **Highest injury:** FATL
- **Fatal:** 4
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 4
## Aircraft
- **Make:** SIKORSKY
- **Model:** S-61N
- **Registration:** N615CK
- **FAR Part:** 133
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The improper installation of the fore/aft primary servo by maintenance personnel, which resulted in the attaching hardware backing out and which subsequently rendered the helicopter uncontrollable. Contributing to the accident was the company’s quality control personnel to identify the improper installation before certifying the helicopter for flight.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ANC22FA018) · AI Analytics · CC0 1.0*