# NTSB Accident WPR16FA148
> **AIR TRACTOR INC AT 502B** · 2016-07-23 · Zamora, CA, USA · FATL
## Event
- **NTSB number:** WPR16FA148
- **Event ID:** 20160723X20253
- **Type:** Accident
- **Date:** 2016-07-23
- **Location:** Zamora, CA, USA
- **Coordinates:** 38.802776, -121.767501
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** AIR TRACTOR INC
- **Model:** AT 502B
- **Registration:** N502WC
- **FAR Part:** 137
- **Engines:** —
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of both pilots to maintain an adequate visual lookout, which resulted in a midair collision. Also causal was the pilot's use of two sedating antihistamines and two impairing medication and the effect of sun glare on his visual lookout, which likely led to his inability to successfully see and avoid the other airplane.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR16FA148) · AI Analytics · CC0 1.0*