# NTSB Accident CHI94LA284
> **Head Balloons, Inc. AX7-77** · 1994-06-25 · WEST CHICAGO, IL, USA · SERS
## Event
- **NTSB number:** CHI94LA284
- **Event ID:** 20001206X01513
- **Type:** Accident
- **Date:** 1994-06-25
- **Location:** WEST CHICAGO, IL, USA
- **Coordinates:** 41.879444, -88.220497
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 4
## Aircraft
- **Make:** Head Balloons, Inc.
- **Model:** AX7-77
- **Registration:** N21WR
- **FAR Part:** 091
- **Engines:** —
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

the pilot's failure to maintain proper descent rate.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI94LA284) · AI Analytics · CC0 1.0*