# NTSB Accident ERA17LA227
> **PIPER PA28** · 2017-07-04 · San Juan, PR, USA · NONE
## Event
- **NTSB number:** ERA17LA227
- **Event ID:** 20170704X72958
- **Type:** Accident
- **Date:** 2017-07-04
- **Location:** San Juan, PR, USA
- **Coordinates:** 18.458333, -66.089447
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 4
- **Total aboard:** 4
## Aircraft
- **Make:** PIPER
- **Model:** PA28
- **Registration:** N9427J
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A partial loss of engine power during initial climb for reasons that could not be determined and the pilot's subsequent exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA17LA227) · AI Analytics · CC0 1.0*