# NTSB Accident LAX91FA333
> **PIPER PA 28-181** · 1991-07-28 · SONORA, CA, USA · FATL
## Event
- **NTSB number:** LAX91FA333
- **Event ID:** 20001212X17576
- **Type:** Accident
- **Date:** 1991-07-28
- **Location:** SONORA, CA, USA
- **Coordinates:** 37.979759, -120.389846
## Injuries
- **Highest injury:** FATL
- **Fatal:** 3
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 3
## Aircraft
- **Make:** PIPER
- **Model:** PA 28-181
- **Registration:** N82716
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

FAILURE OF THE FLIGHT INSTRUCTOR/PILOT-IN-COMMAND TO ADEQUATELY SUPERVISE THE FLIGHT AND TO MAINTAIN ADEQUATE AIRSPEED BY EXCEEDING THE CLIMB PERFORMANCE OF THE AIRPLANE. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT-IN-COMMAND'S INADEQUATE PLANNING AND HIS SELECTION OF AN IMPROPER ALTITUDE FOR FLIGHT INTO RISING TERRAIN DURING 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=LAX91FA333) · AI Analytics · CC0 1.0*