# Incident 19780630034489I: Boeing 737222, Washington, DC, June 30, 1978

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: June 30, 1978, 19:50 local time
- Place: Washington, DC
- Airport: Dulles
- Phase of flight: Normal Cruise
- Operating rules: Air carrier (Part 121)
- Operator: UAL
- Location: 38.8951° N, 77.0364° W: Placed by OpenAirDocs: center of Washington, DC, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.8951&lon=-77.0364&mi=10
- Aircraft: N9047U (not matched to a registry record)
- Reported make and model: BOEING 737222
- People aboard: 106
- Fatal injuries: 0
- Pilot flight hours: 0 in this make and model, 0 in the last 90 days
- NTSB investigation: [NTSB IAD78IA075](https://openairdocs.org/ntsb/IAD78IA075) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19780630034489I

## Narrative

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

"A" HYDRAULIC SYSTEM FAILED DUE TO LOOSE B NUT AND PUMP FAILURE. LANDED SAFELY.

## 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 IAD78IA075](https://openairdocs.org/ntsb/IAD78IA075), Jun 30, 1978: Boeing 737 (N9047U), Elmira, NY, incident, no damage

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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