# NTSB Accident LAX89LA068
> **BOEING 747SP-21** · 1988-12-23 · Midway Islands, PO, USA · SERS
## Event
- **NTSB number:** LAX89LA068
- **Event ID:** 20001213X27446
- **Type:** Accident
- **Date:** 1988-12-23
- **Location:** Midway Islands, PO, USA
- **Coordinates:** 37.635818, -130.070388
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 1
- **Uninjured:** 220
- **Total aboard:** 222
## Aircraft
- **Make:** BOEING
- **Model:** 747SP-21
- **Registration:** N146UA
- **FAR Part:** 121
- **Engines:** 4
- **Damage:** —
## Conditions
- **Light:** DAWN
- **Weather:** Unk
## Probable cause

AIRCRAFT'S ENCOUNTER WITH UNFORECAST SEVERVE CLEAR TURBULENCE.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX89LA068) · AI Analytics · CC0 1.0*