# NTSB Accident LAX99LA236
> **Miller ROTORWAY EXEC 162F** · 1999-06-25 · PACOIMA, CA, USA · SERS
## Event
- **NTSB number:** LAX99LA236
- **Event ID:** 20001212X19043
- **Type:** Accident
- **Date:** 1999-06-25
- **Location:** PACOIMA, CA, USA
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Miller
- **Model:** ROTORWAY EXEC 162F
- **Registration:** N112WM
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's improper valve adjustments and failure to follow the manufacturer's instructions, which resulted in a loose number 3 cylinder rocker arm and a loss of engine power.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX99LA236) · AI Analytics · CC0 1.0*