# NTSB Incident CHI97IA074
> **de Havilland DHC-8-311** · 1997-02-24 · RAPID CITY, SD, USA · NONE
## Event
- **NTSB number:** CHI97IA074
- **Event ID:** 20001208X07387
- **Type:** Incident
- **Date:** 1997-02-24
- **Location:** RAPID CITY, SD, USA
- **Coordinates:** 44.070583, -103.229248
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 45
- **Total aboard:** 45
## Aircraft
- **Make:** de Havilland
- **Model:** DHC-8-311
- **Registration:** N430AW
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

a missing 'C' clip, which resulted in the master link coming apart, allowing the electric elevator trim chain and cable to become entangled in the elevator trim cables.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI97IA074) · AI Analytics · CC0 1.0*