# NTSB Accident DEN91LA114
> **AIR TRACTOR AT-502** · 1991-08-16 · CLOVIS, NM, USA · NONE
## Event
- **NTSB number:** DEN91LA114
- **Event ID:** 20001212X17847
- **Type:** Accident
- **Date:** 1991-08-16
- **Location:** CLOVIS, NM, USA
- **Coordinates:** 34.410987, -103.199958
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** AIR TRACTOR
- **Model:** AT-502
- **Registration:** N4535K
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DUSK
- **Weather:** VMC
## Probable cause

FAILURE OF THE PILOT TO MAINTAIN CLEARANCE FROM RISING/UNEVEN TERRAIN.  FACTORS RELATED TO THE ACCIDENT WERE: THE LIGHT CONDITIONS AT DUSK, AND THE LACK OF VISUAL CUES FOR THE PILOT.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN91LA114) · AI Analytics · CC0 1.0*