# NTSB Accident MIA91LA101
> **Air Tractor AT-401** · 1991-03-15 · AVON, MS, USA · SERS
## Event
- **NTSB number:** MIA91LA101
- **Event ID:** 20001212X16659
- **Type:** Accident
- **Date:** 1991-03-15
- **Location:** AVON, MS, USA
- **Coordinates:** 33.229438, -91.040496
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Air Tractor
- **Model:** AT-401
- **Registration:** N73135
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

LOSS OF ENGINE POWER FOR UNDETERMINED REASONS DURING A TURN WHILE ON AN AERIAL APPLICATION FLIGHT.  CONTRIBUTING TO THE ACCIDENT WAS FAILURE OF THE LEFT MAGNETO DUE TO FAILURE OF A PHENOLIC GEAR WHICH DRIVES THE ROTATING MAGNET.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=MIA91LA101) · AI Analytics · CC0 1.0*