# NTSB Accident LAX97FA291
> **Hefner Pitts S1S** · 1997-08-17 · VAN NUYS, CA, USA · FATL
## Event
- **NTSB number:** LAX97FA291
- **Event ID:** 20001208X08663
- **Type:** Accident
- **Date:** 1997-08-17
- **Location:** VAN NUYS, CA, USA
- **Coordinates:** 34.190155, -118.490669
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Hefner Pitts
- **Model:** S1S
- **Registration:** N10HJ
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** NR
- **Weather:** VMC
## Probable cause

the operation of the propeller beyond the design rpm limitations and the resultant gyroscopic loads from aerobatics. Contributing to the accident was the lack of a required instrument panel rpm restriction for the propeller mandated by an airworthiness directive.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX97FA291) · AI Analytics · CC0 1.0*