# NTSB Accident LAX99LA023
> **Piper PA-46-350P** · 1998-11-04 · MAMMOTH, CA, USA · SERS
## Event
- **NTSB number:** LAX99LA023
- **Event ID:** 20001211X11453
- **Type:** Accident
- **Date:** 1998-11-04
- **Location:** MAMMOTH, CA, USA
- **Coordinates:** 37.579498, -118.839149
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 2
- **Minor:** 2
- **Uninjured:** 0
- **Total aboard:** 4
## Aircraft
- **Make:** Piper
- **Model:** PA-46-350P
- **Registration:** N50JG
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to ensure that the autopilot was off prior to takeoff, and, his failure to maintain pitch control during the resultant pitch trim excursion during the takeoff ground roll.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX99LA023) · AI Analytics · CC0 1.0*