# NTSB Accident CHI91DTK04
> **BOLAND/POE TSUNAMI** · 1991-09-25 · PIERRE, SD, USA · FATL
## Event
- **NTSB number:** CHI91DTK04
- **Event ID:** 20001212X18049
- **Type:** Accident
- **Date:** 1991-09-25
- **Location:** PIERRE, SD, USA
- **Coordinates:** 44.370147, -100.319869
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** BOLAND/POE
- **Model:** TSUNAMI
- **Registration:** NX39JR
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A BENDING OVERLOAD FAILURE OF THE WING FLAP CONTROL RODS AND REMEDIAL ACTION BY THE PILOT WAS NOT POSSIBLE.  FACTORS IN THE ACCIDENT ARE THE INADEQUATE DESIGN OF THE WING FLAP SYSTEM BY THE PILOT/OPERATOR MANUFACTURER AND HIS LACK OF TOTAL EXPERIENCE IN TYPE OF AIRCRAFT.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI91DTK04) · AI Analytics · CC0 1.0*