# NTSB Accident LAX90DVG13
> **CHARLES T. BRIETIGAM RV-4** · 1990-07-21 · SAN ANDREAS, CA, USA · SERS
## Event
- **NTSB number:** LAX90DVG13
- **Event ID:** 20001212X23719
- **Type:** Accident
- **Date:** 1990-07-21
- **Location:** SAN ANDREAS, CA, USA
- **Coordinates:** 38.200897, -120.620712
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** CHARLES T. BRIETIGAM
- **Model:** RV-4
- **Registration:** N87CT
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE FAILURE OF FOUR PROPELLER RETENTION BOLTS WHICH REQUIRED THE ENGINE TO BE SHUT DOWN. A FACTOR IN THE ACCIDENT WAS THE PILOT'S MISJUDGEMENT OF THE FORCED LANDING APPROACH.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX90DVG13) · AI Analytics · CC0 1.0*