# NTSB Accident LAX91LA255
> **CESSNA 172N** · 1991-06-08 · THERMAL, CA, USA · MINR
## Event
- **NTSB number:** LAX91LA255
- **Event ID:** 20001212X17306
- **Type:** Accident
- **Date:** 1991-06-08
- **Location:** THERMAL, CA, USA
- **Coordinates:** 33.479255, -116.100685
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 2
- **Total aboard:** 4
## Aircraft
- **Make:** CESSNA
- **Model:** 172N
- **Registration:** N6230D
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE PARTIAL FAILURE OF THE ENGINE/POWERPLANT FROM A WORN INTAKE VALVE AND THE FAILURE OF COMPANY/OPERATOR MANAGEMENT TO PERFORM AN OVERHAUL ON THE ENGINE WITHIN THE TIME FRAME RECOMMENDED BY THE ENGINE MANUFACTURER.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX91LA255) · AI Analytics · CC0 1.0*