# NTSB Accident CHI00FA050
> **Israel Aircraft Industries 1124A** · 1999-12-26 · MILWAUKEE, WI, USA · NONE
## Event
- **NTSB number:** CHI00FA050
- **Event ID:** 20001212X20199
- **Type:** Accident
- **Date:** 1999-12-26
- **Location:** MILWAUKEE, WI, USA
- **Coordinates:** 42.980068, -87.90036
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 6
- **Total aboard:** 6
## Aircraft
- **Make:** Israel Aircraft Industries
- **Model:** 1124A
- **Registration:** N422BC
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAWN
- **Weather:** VMC
## Probable cause

The failure of the first stage pressure reducer in the oxygen regulator assembly.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI00FA050) · AI Analytics · CC0 1.0*