# NTSB Accident WPR13LA131
> **BOEING 747-422** · 2013-02-19 · Pacific Ocean, UN · SERS
## Event
- **NTSB number:** WPR13LA131
- **Event ID:** 20130220X51849
- **Type:** Accident
- **Date:** 2013-02-19
- **Location:** Pacific Ocean, UN
- **Coordinates:** 20.228055, -139.203048
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 220
- **Total aboard:** 221
## Aircraft
- **Make:** BOEING
- **Model:** 747-422
- **Registration:** N174UA
- **FAR Part:** 121
- **Engines:** 4
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The flight’s encounter with moderate clear air turbulence while en route, which resulted in a serious injury to a flight attendant. Contributing to the accident was the lack of communication equipment in the rest compartment, which, if installed, could have alerted the cabin crewmembers that the seatbelt sign was on.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR13LA131) · AI Analytics · CC0 1.0*