# Incident 20090522009219I: Airbus A319131, Pittsburgh, PA, May 22, 2009

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: May 22, 2009, 12:50 local time
- Place: Pittsburgh, PA
- Airport: Pittsburgh International
- Damage: No damage
- Phase of flight: Cruise/Level Flight
- Operating rules: Air carrier (Part 121)
- Operator: UALA
- Location: 40.4914° N, 80.2327° W: Placed by OpenAirDocs at PITTSBURGH INTL (PIT), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.4914&lon=-80.2327&mi=10
- Aircraft: N817UA, registered now (https://openairdocs.org/aircraft/N817UA) (OpenAirDocs)
- Registry model: Airbus Industrie A319-131 (registry code 3930317, https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Registry engine: IAE V2522-A5 (registry code 34612, https://openairdocs.org/engine/iae-v2522-a5) (OpenAirDocs)
- Reported make and model: AIRBUS A319131
- People aboard: 124
- Fatal injuries: 0
- Other injuries: 0
- Pilot flight hours: 0 total, 0 in this make and model, 0 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20090522009219I

## Narrative

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

(-23)  EVENT SUMMARY - AT APPROXIMATELY 1612 GREENWICH MEAN TIME (GMT), WHILE CLIMBING THROUGH 24,000 FEET, THE FLIGHT CREW OBSERVED A MESSAGE FOR THE GREEN HYDRAULIC SYSTEM LOW RESERVOIR LEVEL, INDICATING A LOSS OF GREEN SYSTEM FLUID.  AS AN ACTION IN THE FLIGHT MANUAL IRREGULAR PROCEDURE, THE FIRST OFFICER ATTEMPTED TO TURN OFF THE POWER TRANSFER UNIT (PTU), HOWEVER, THE PTU WOULD NOT SHUT OFF.  THE FIRST OFFICER CONTACTED SAMC WHO INSTRUCTED HIM TO CYCLE THE CIRCUIT BREAKER FOR THE PTU.  THIS HAD NO AFFECT AND THE PTU CONTINUED TO RUN UNTIL THE YELLOW HYDRAULIC SYSTEM OVERHEATED.  THE FLIGHT CREW TURNED OFF THE YELLOW SYSTEM, WHICH NOW FORCED THEM TO RELY SOLELY ON THE BLUE HYDRAULIC SYSTEM WHICH REQUIRED THEM TO LAND AS-SOON-AS-POSSIBLE.  THE FLIGHT CREW ATTEMPTED TO LOWER THE FLAPS AFTER LETTING THE YELLOW SYSTEM COOL DOWN; HOWEVER, THE FLAPS LOCKED OUT BEFORE FULLY DEPLOYING.  THE LANDING GEAR WAS EXTENDED MANUALLY AND THE AUXILIARY POWER UNIT (APU) WAS STARTED ON SHORT FINAL.  THE AIRCRAFT LANDED WITHOUT INCIDENT AT KPIT.

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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