# Incident 19951104043779I: Boeing 737322, Portland, OR, November 4, 1995

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: November 4, 1995, 16:37 local time
- Place: Portland, OR
- Airport: Portland International
- Phase of flight: Final Approach
- Operating rules: Air carrier (Part 121)
- Operator: UALA
- Location: 45.5887° N, 122.5969° W: Placed by OpenAirDocs at PORTLAND INTL (PDX), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.5887&lon=-122.5969&mi=10
- Aircraft: N334UA, a cancelled registration (https://openairdocs.org/deregistered/N334UA-2013-10-28) (OpenAirDocs)
- Registry model: Boeing 737-322 (registry code 138447Y, https://openairdocs.org/model/boeing-737-322) (OpenAirDocs)
- Registry engine: CFM International CFM56 series (registry code 13802, https://openairdocs.org/engine/cfm-international-cfm56-series) (OpenAirDocs)
- Reported make and model: BOEING 737322
- People aboard: 121
- Fatal injuries: 0
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19951104043779I

## Narrative

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

NARRATIVE: ON NOVEMBER 4, 1995, UNITED FLIGHT 1429, DENVER, COLORADO TO PORTLAND, OREGON, EXPERIENCED FAILURE OF THE B HYDRAULIC SYSTEM WHILE ON FINAL APPROACH TO PDX. THE CREW DISCONTINUED THE LANDING, DID A GO-AROUND, AND LANDED AT 1437 PDT. AFTER LANDING, THE TOWER REPORTED THAT THE AIRCRAFT APPEARED TO HAVE HOT BRAKES. THE FIRE DEPARTMENT RESPONDED, AND MONITORED THE SITUATION. THE AIRCRAFT SUBSEQUENTLY WAS TOWED TO THE GATE AREA. MAINTENANCE AT PDX DISCOVERED A FAILED ACOUSTIC FILTER ON THE B SYSTEM ELECTRIC PUMP. THE FILTER FAILURE DEPLETED THE B SYSTEM RESERVOIR TO APPROXIMATELY 3/8 OF NORMAL CAPACITY. MAINTENANCE AT PORTLAND REMOVED AND REPLACED THE FILTER, INSPECTED THE SYSTEM FOR CONTAMINATION, AND PERFORMED A LEAK AND OPS CHECK. THE AIRCRAFT WAS RETURNED TO SERVICE ON NOVEMBER 5, 1995. THIS REPORT IS CLOSED.

## Other reports on N334UA (1)

Matched to the same aircraft by N-number and date.

- [Incident 19910210005989I](https://openairdocs.org/incident/19910210005989I), Feb 10, 1991: Boeing 737322 (N334UA), Billings, MT. Takeoff warning horn sounded on takeoff roll. Aborted. Speedbrake handle was fully stowed in down detent.

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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