# NTSB Accident FTW94FA082
> **CESSNA 421C** · 1994-02-10 · SAN ANTONIO, TX, USA · FATL
## Event
- **NTSB number:** FTW94FA082
- **Event ID:** 20001206X00743
- **Type:** Accident
- **Date:** 1994-02-10
- **Location:** SAN ANTONIO, TX, USA
- **Coordinates:** 29.540626, -98.490882
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 3
## Aircraft
- **Make:** CESSNA
- **Model:** 421C
- **Registration:** N741CA
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

IMPROPER SERVICING OF THE AIRPLANE WITH JET FUEL, WHICH RESULTED IN PREIGNITION AND/OR DETONATION AND SUBSEQUENT FAILURE OF PISTONS IN BOTH ENGINES.  A FACTOR RELATED TO THE ACCIDENT WAS: THE LACK OF A RESTRICTIVE MATING NOZZLE ON THE REFUELING TRUCK.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=FTW94FA082) · AI Analytics · CC0 1.0*