# NTSB Accident CEN12FA170
> **MOONEY M20E** · 2012-02-26 · San Antonio, TX, USA · FATL
## Event
- **NTSB number:** CEN12FA170
- **Event ID:** 20120226X01048
- **Type:** Accident
- **Date:** 2012-02-26
- **Location:** San Antonio, TX, USA
- **Coordinates:** 29.321111, -98.459724
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** MOONEY
- **Model:** M20E
- **Registration:** N9224M
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's inadvertent overboost of the turbocharged engine during initial climb, which resulted in detonation and a partial loss of engine power followed by the pilot's failure to maintain airspeed and the instructor's delayed remedial action, which resulted in an aerodynamic stall. Contributing to the accident was the instructor's improper judgment in acting as a pilot with disqualifying medical conditions and while taking impairing medications.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN12FA170) · AI Analytics · CC0 1.0*