# NTSB Accident DCA98MA015
> **Boeing 747-122** · 1997-12-28 · PACIFIC OCEAN, PO · FATL
## Event
- **NTSB number:** DCA98MA015
- **Event ID:** 20001208X09291
- **Type:** Accident
- **Date:** 1997-12-28
- **Location:** PACIFIC OCEAN, PO
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 18
- **Minor:** 171
- **Uninjured:** 203
- **Total aboard:** 393
## Aircraft
- **Make:** Boeing
- **Model:** 747-122
- **Registration:** N4723U
- **FAR Part:** 121
- **Engines:** —
- **Damage:** MINR
## Conditions
- **Light:** NBRT
- **Weather:** VMC
## Probable cause

The pilot-in-command's inadvertent flight into adverse weather conditions, and the difficulty of obtaining adequate weather forecasts of over-ocean turbulence.  Factors contributing to the accident include the presence of clear air turbulence, and the failure of the flight attendant to issue a safety advisory.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DCA98MA015) · MORVS · CC0 1.0*