# NTSB Incident NYC91IA133
> **BOEING 747SP** · 1991-04-29 · CHURCHVILLE, NY, USA · NONE
## Event
- **NTSB number:** NYC91IA133
- **Event ID:** 20001212X16856
- **Type:** Incident
- **Date:** 1991-04-29
- **Location:** CHURCHVILLE, NY, USA
- **Coordinates:** 43.100536, -77.87957
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 102
- **Total aboard:** 102
## Aircraft
- **Make:** BOEING
- **Model:** 747SP
- **Registration:** N148UA
- **FAR Part:** 121
- **Engines:** 4
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A FAILURE OF THE SIXTH ROTATING AIRSEAL WHICH LED TO AN UNCONTAINED ENGINE FAILURE.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=NYC91IA133) · AI Analytics · CC0 1.0*