# NTSB Accident LAX98LA131
> **Callair A-9** · 1998-03-18 · THERMAL, CA, USA · NONE
## Event
- **NTSB number:** LAX98LA131
- **Event ID:** 20001211X09727
- **Type:** Accident
- **Date:** 1998-03-18
- **Location:** THERMAL, CA, USA
- **Coordinates:** 33.479049, -116.099891
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** Callair
- **Model:** A-9
- **Registration:** N7211V
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of the oil pump drive shaft due to the installation of an incorrect oil pump crankshaft gear by maintenance personnel at the last overhaul.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX98LA131) · AI Analytics · CC0 1.0*