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Medium large transport experiences nose gear unsafe warning. Flight crew determine that hydraulic pressure not switched to high on before landing check.
| Attributes | |
| ACN | 119812 |
| Time | |
| Date | 198908 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ont |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 4000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ont |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 8000 flight time type : 600 |
| ASRS Report | 119812 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
While making an approach for landing at ontario int'l airport, we had an unsafe nose gear indication after lowering the gear. We were given vectors in the area while we tried to correct the problem. After performing the required checklists for our gear problem it was found that the hydraulic pumps had not been turned to the high position. The high position was selected and all gear indications were normal. The flight continued and an uneventful landing was made at ontario. I was flying the aircraft and the first officer had failed to perform the portion of the descent checklist calling for the hydraulic pumps to be positioned to high.
Original NASA ASRS Text
Title: MLG EXPERIENCES NOSE GEAR UNSAFE WARNING. FLT CREW DETERMINE THAT HYDRAULIC PRESSURE NOT SWITCHED TO HIGH ON BEFORE LNDG CHECK.
Narrative: WHILE MAKING AN APCH FOR LNDG AT ONTARIO INT'L ARPT, WE HAD AN UNSAFE NOSE GEAR INDICATION AFTER LOWERING THE GEAR. WE WERE GIVEN VECTORS IN THE AREA WHILE WE TRIED TO CORRECT THE PROBLEM. AFTER PERFORMING THE REQUIRED CHECKLISTS FOR OUR GEAR PROBLEM IT WAS FOUND THAT THE HYDRAULIC PUMPS HAD NOT BEEN TURNED TO THE HIGH POSITION. THE HIGH POSITION WAS SELECTED AND ALL GEAR INDICATIONS WERE NORMAL. THE FLT CONTINUED AND AN UNEVENTFUL LNDG WAS MADE AT ONTARIO. I WAS FLYING THE ACFT AND THE F/O HAD FAILED TO PERFORM THE PORTION OF THE DSCNT CHECKLIST CALLING FOR THE HYDRAULIC PUMPS TO BE POSITIONED TO HIGH.
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.