# NTSB Accident WPR17LA214
> **SC AEROSTAR SA YAK 52W** · 2017-09-23 · El Cajon, CA, USA · NONE
## Event
- **NTSB number:** WPR17LA214
- **Event ID:** 20170923X81050
- **Type:** Accident
- **Date:** 2017-09-23
- **Location:** El Cajon, CA, USA
- **Coordinates:** 32.82611, -116.972503
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** SC AEROSTAR SA
- **Model:** YAK 52W
- **Registration:** N52KF
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to maintain directional control during taxi after a reduction in braking performance and steering capabilities due to his failure to reopen the air supply valve after the nonstandard engine start.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR17LA214) · AI Analytics · CC0 1.0*