# NTSB Accident ERA23FA188
> **MILLER GLENN F RV-12** · 2023-04-11 · Climax, NC, USA · FATL
## Event
- **NTSB number:** ERA23FA188
- **Event ID:** 20230411107039
- **Type:** Accident
- **Date:** 2023-04-11
- **Location:** Climax, NC, USA
- **Coordinates:** 35.933896, -79.683809
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** MILLER GLENN F
- **Model:** RV-12
- **Registration:** N543GM
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The airplane owner/builder’s inappropriate use of a lower grade fuel than that required by the airplane and engine operations manual, which resulted in engine detonation and the degradation and eventual obliteration of the Nos. 1 and 2 cylinder spark plug electrode tips. Contributing to the outcome was the pilots’ decision to continue flight at low altitude following a partial loss of engine power instead of performing an immediate precautionary landing, which resulted in collision with an overpass and terrain.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA23FA188) · MORVS · CC0 1.0*