# NTSB Accident MIA91LA219
> **AIR TRACTOR AT-401** · 1991-09-16 · SUMNER, MS, USA · MINR
## Event
- **NTSB number:** MIA91LA219
- **Event ID:** 20001212X18147
- **Type:** Accident
- **Date:** 1991-09-16
- **Location:** SUMNER, MS, USA
- **Coordinates:** 33.990818, -90.350517
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** AIR TRACTOR
- **Model:** AT-401
- **Registration:** N1004W
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

FAILURE OF THE NO. 1 CYLINDER ASSEMBLY.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=MIA91LA219) · AI Analytics · CC0 1.0*