# NTSB Accident CHI88FA190
> **MCDONNELL DOUGLAS 269B** · 1988-08-02 · BRACEVILLE, IL, USA · FATL
## Event
- **NTSB number:** CHI88FA190
- **Event ID:** 20001213X26486
- **Type:** Accident
- **Date:** 1988-08-02
- **Location:** BRACEVILLE, IL, USA
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** MCDONNELL DOUGLAS
- **Model:** 269B
- **Registration:** N9522F
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** NR
- **Weather:** VMC
## Probable cause

CONDUCTING MANEUVERING FLIGHT THE PIC FAILED TO MONITOR THE HELICOPTER SYSTEMS AND ALLOWED THE MAIN ROTOR RPM TO DECAY TO THE POINT WHERE IT WOULD NOT PRODUCE ENOUGH LIFT TO SUSTAIN FLIGHT.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI88FA190) · AI Analytics · CC0 1.0*