# NTSB Accident ERA20CA135
> **AugustaWestland AW119MKII** · 2020-03-21 · Philadelphia, PA, USA · NONE
## Event
- **NTSB number:** ERA20CA135
- **Event ID:** 20200322X70803
- **Type:** Accident
- **Date:** 2020-03-21
- **Location:** Philadelphia, PA, USA
- **Coordinates:** 40.083332, -75.001388
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** AugustaWestland
- **Model:** AW119MKII
- **Registration:** N982SS
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The in-flight failure of the lower left side of the engine cowling due to the mechanic’s improper installation of the fasteners, which resulted in the cowling impacting all four main rotor blades.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA20CA135) · AI Analytics · CC0 1.0*