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A medium large transport in cruise at FL280 experienced loss of left hydraulic system pressure and quantity. Cause unknown.
| Attributes | |
| ACN | 537535 |
| Time | |
| Date | 200202 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : sea.airport |
| State Reference | WA |
| Altitude | msl single value : 28000 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Fog Rain |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zse.artcc tower : cvg.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 537535 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| ASRS Report | 537536 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : left pressure and quantity ind. other flight crewa other flight crewb |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Left hydraulic system failed during cruise with loss of all quantity and pressure. Abnormal checklist was completed and descent, approach, and landing were normal. After landing, left thrust reverser would not stow so APU was started to back up right engine generator, and left engine was shut down. Taxi to the gate was slowed by traffic, gate personnel and confusing gate markings. During delay, cockpit became warm and APU air was unintentionally turned on. 10 mins later, after right engine shutdown, aircraft cabin started to fill with fumes. Air conditioning was turned off and fumes stopped.
Original NASA ASRS Text
Title: A MEDIUM LARGE TRANSPORT IN CRUISE AT FL280 EXPERIENCED LOSS OF L HYD SYS PRESSURE AND QUANTITY. CAUSE UNKNOWN.
Narrative: L HYD SYS FAILED DURING CRUISE WITH LOSS OF ALL QUANTITY AND PRESSURE. ABNORMAL CHKLIST WAS COMPLETED AND DSCNT, APCH, AND LNDG WERE NORMAL. AFTER LNDG, L THRUST REVERSER WOULD NOT STOW SO APU WAS STARTED TO BACK UP R ENG GENERATOR, AND L ENG WAS SHUT DOWN. TAXI TO THE GATE WAS SLOWED BY TFC, GATE PERSONNEL AND CONFUSING GATE MARKINGS. DURING DELAY, COCKPIT BECAME WARM AND APU AIR WAS UNINTENTIONALLY TURNED ON. 10 MINS LATER, AFTER R ENG SHUTDOWN, ACFT CABIN STARTED TO FILL WITH FUMES. AIR CONDITIONING WAS TURNED OFF AND FUMES STOPPED.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.