# NTSB Accident ERA21LA250
> **DIAMOND DA20** · 2021-06-14 · Matthews, VA, USA · MINR
## Event
- **NTSB number:** ERA21LA250
- **Event ID:** 20210614103257
- **Type:** Accident
- **Date:** 2021-06-14
- **Location:** Matthews, VA, USA
- **Coordinates:** 37.371667, -76.228333
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** DIAMOND
- **Model:** DA20
- **Registration:** N458MA
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The mechanic’s failure to properly secure the oil sump drain plug during a 100-hour maintenance inspection, which resulted in a total loss of engine power due to oil starvation.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA21LA250) · AI Analytics · CC0 1.0*