# NTSB Accident LAX91LA033
> **MOONEY M20E** · 1990-11-17 · TUBA CITY, AZ, USA · MINR
## Event
- **NTSB number:** LAX91LA033
- **Event ID:** 20001212X24638
- **Type:** Accident
- **Date:** 1990-11-17
- **Location:** TUBA CITY, AZ, USA
- **Coordinates:** 36.089527, -111.13095
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** MOONEY
- **Model:** M20E
- **Registration:** N5703Q
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

FAILURE OF THE PISTON RINGS WHICH REDUCED THE AVAILABLE ENGINE POWER, AND THE PILOT'S CONTINUED OPERATION OF HIS AIRPLANE WITH A KNOWN ENGINE DEFICIENCY DURING THE RELATIVELY HIGH DENSITY ALTITUDE CONDITIONS.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX91LA033) · AI Analytics · CC0 1.0*