# NTSB Accident WPR19FA022
> **Piper PA28** · 2018-11-09 · Guthrie Center, IA, USA · FATL
## Event
- **NTSB number:** WPR19FA022
- **Event ID:** 20181110X83525
- **Type:** Accident
- **Date:** 2018-11-09
- **Location:** Guthrie Center, IA, USA
- **Coordinates:** 41.620277, -94.521942
## Injuries
- **Highest injury:** FATL
- **Fatal:** 4
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 4
## Aircraft
- **Make:** Piper
- **Model:** PA28
- **Registration:** N91770
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DUSK
- **Weather:** VMC
## Probable cause

Pilot incapacitation due to carbon monoxide poisoning as a result of an undetected crack in an engine exhaust muffler, which permitted entry of exhaust gasses into the cabin via the cabin heat system.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR19FA022) · AI Analytics · CC0 1.0*