# NTSB Accident WPR11LA202
> **RANS S-12** · 2011-04-16 · Marana, AZ, USA · NONE
## Event
- **NTSB number:** WPR11LA202
- **Event ID:** 20110416X01319
- **Type:** Accident
- **Date:** 2011-04-16
- **Location:** Marana, AZ, USA
- **Coordinates:** 32.509723, -111.325279
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** RANS
- **Model:** S-12
- **Registration:** N107JL
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to conduct an adequate preflight inspection, which resulted in a loss of engine coolant during climb due to an unsecured tank cap. Contributing to the accident was the pilot's failure to use available engine power to ensure a landing on an appropriate surface.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR11LA202) · AI Analytics · CC0 1.0*