# NTSB Accident DCA11FA091
> **BOEING 747-422** · 2011-07-29 · Tangshan, CH · SERS
## Event
- **NTSB number:** DCA11FA091
- **Event ID:** 20110730X60307
- **Type:** Accident
- **Date:** 2011-07-29
- **Location:** Tangshan, CH
- **Coordinates:** 39.545197, 118.167971
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 4
- **Uninjured:** 381
- **Total aboard:** 386
## Aircraft
- **Make:** BOEING
- **Model:** 747-422
- **Registration:** N173UA
- **FAR Part:** 121
- **Engines:** 4
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

an inadvertent encounter with convectively induced turbulence likely due to radar limitations and convective weather developing upwards into the flight path.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DCA11FA091) · AI Analytics · CC0 1.0*