# NTSB Incident MIA98IA100
> **Aerospatiale ATR-42-300** · 1998-03-10 · FORT MYERS, FL, USA · NONE
## Event
- **NTSB number:** MIA98IA100
- **Event ID:** 20001211X09735
- **Type:** Incident
- **Date:** 1998-03-10
- **Location:** FORT MYERS, FL, USA
- **Coordinates:** 26.510711, -81.699386
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 47
- **Total aboard:** 47
## Aircraft
- **Make:** Aerospatiale
- **Model:** ATR-42-300
- **Registration:** N275BC
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of the No. 1 generator field excitation return wire terminal lug due to improper installation of the field excitation return wire by maintenance personnel; the subsequent failure of the No. 2 generator due to overvoltage, caused by the momentary closure of the No. 1 generator contactor, as a result of the flight crew's  attempt to reset the No. 1 generator, while an overvoltage condition existed at its POR, due to the shorted failure of the No. 1 GCU diode CR17; and the rapid failure of the aircraft's main battery, accelerated by its existing depleted condition, following an extended period of inadequate charging, due to a damaged electrical system.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=MIA98IA100) · AI Analytics · CC0 1.0*