# NTSB Accident ERA17LA246
> **COSTRUZIONI AERONAUTICHE TECNA P92 Eaglet** · 2017-07-15 · Stevensville, MD, USA · NONE
## Event
- **NTSB number:** ERA17LA246
- **Event ID:** 20170716X40924
- **Type:** Accident
- **Date:** 2017-07-15
- **Location:** Stevensville, MD, USA
- **Coordinates:** 38.976387, -76.330001
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** COSTRUZIONI AERONAUTICHE TECNA
- **Model:** P92 Eaglet
- **Registration:** N561TU
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The fatigue failure of an exhaust valve spring retainer due to air trapped in the lubrication system, which resulted in a total loss of engine power.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA17LA246) · AI Analytics · CC0 1.0*