# NTSB Accident LAX90LA259
> **CESSNA 421C** · 1990-07-18 · LANCASTER, CA, USA · NONE
## Event
- **NTSB number:** LAX90LA259
- **Event ID:** 20001212X23746
- **Type:** Accident
- **Date:** 1990-07-18
- **Location:** LANCASTER, CA, USA
- **Coordinates:** 34.719875, -118.47908
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 5
- **Total aboard:** 5
## Aircraft
- **Make:** CESSNA
- **Model:** 421C
- **Registration:** N6089X
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE ACCIDENT WAS ERODED IGNITION SPARK PLUG ELECTRODES AND MAINTENANCE PERSONNEL NEGLECTING TO ADJUST SPARK PLUG ELECTRODES AND MAINTENANCE PERSONNEL NEGLECTING TO ADJUST SPARK PLUG GAP. THE ROUGH TERRAIN IN WHICH THE AIRCRAFT LANDED WAS A FACTOR IN THE ACCIDENT.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX90LA259) · AI Analytics · CC0 1.0*