# NTSB Accident LAX92LA012
> **BEECH K35** · 1991-10-11 · GRASS VALLEY, CA, USA · NONE
## Event
- **NTSB number:** LAX92LA012
- **Event ID:** 20001212X18322
- **Type:** Accident
- **Date:** 1991-10-11
- **Location:** GRASS VALLEY, CA, USA
- **Coordinates:** 39.18011, -120.979484
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** BEECH
- **Model:** K35
- **Registration:** N9559R
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE INADVERTENT ENCOUNTER WITH A MICROBURST/DOWNBURST PHENOMENA ASSOCIATED WITH THUNDERSTORM ACTIVITY.  A FACTOR IN THE ACCIDENT WAS THE FAILURE OF THE PILOT TO ADEQUATELY ASSESS THE WEATHER CONDITIONS DURING THE LANDING ATTEMPT.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX92LA012) · AI Analytics · CC0 1.0*