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Air carrier large transport gear up landing at ord. Flight crew unable to extend by normal or alternate procedure.
| Attributes | |
| ACN | 93389 |
| Time | |
| Date | 198808 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 15200 |
| ASRS Report | 93389 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 210 flight time total : 4088 flight time type : 2709 |
| ASRS Report | 93389 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : unable none taken : anomaly accepted |
| Consequence | other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Unable to lower landing gear either normally (hydraulic) or manually. The WX was not a problem and sufficient fuel (time) was on board to try different solutions. Landing was made with gear up, no fire after landing. All passengers and crew deplaned in an orderly manner. Cause of malfunction is not known at this time, however, suspect hydraulic pressure in the gear up position at all times.
Original NASA ASRS Text
Title: ACR LGT GEAR UP LNDG AT ORD. FLT CREW UNABLE TO EXTEND BY NORMAL OR ALTERNATE PROC.
Narrative: UNABLE TO LOWER LNDG GEAR EITHER NORMALLY (HYD) OR MANUALLY. THE WX WAS NOT A PROB AND SUFFICIENT FUEL (TIME) WAS ON BOARD TO TRY DIFFERENT SOLUTIONS. LNDG WAS MADE WITH GEAR UP, NO FIRE AFTER LNDG. ALL PAXS AND CREW DEPLANED IN AN ORDERLY MANNER. CAUSE OF MALFUNCTION IS NOT KNOWN AT THIS TIME, HOWEVER, SUSPECT HYD PRESSURE IN THE GEAR UP POS AT ALL TIMES.
Data retrieved from NASA's ASRS site as of August 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.