# Incident 19910429019829I: Boeing 747SP21, Newark, NJ, April 29, 1991

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: April 29, 1991, 12:00 local time
- Place: Newark, NJ
- Airport: Newark International
- Damage: Minor damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: Air carrier (Part 121)
- Operator: UALA
- Location: 43.1005° N, 77.8796° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=43.1005&lon=-77.8796&mi=10
- Aircraft: N148UA (not matched to a registry record)
- Reported make and model: BOEING 747SP21
- Reported engine: PWA JT9D7A
- People aboard: 101
- Fatal injuries: 0
- Pilot flight hours: 16,202 total, 51 in this make and model, 51 in the last 90 days
- NTSB investigation: [NTSB NYC91IA133](https://openairdocs.org/ntsb/NYC91IA133) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19910429019829I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

NR2 ENGINE VIBRATING. SECURED IT AND RETURNED. ENGINE HAD UNCONTAINED FAILURE OF TURBINE SECTION.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB NYC91IA133](https://openairdocs.org/ntsb/NYC91IA133), Apr 29, 1991: Boeing 747SP (N148UA), Churchville, NY, incident, minor damage. Probable cause: A FAILURE OF THE SIXTH ROTATING AIRSEAL WHICH LED TO AN UNCONTAINED ENGINE FAILURE.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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