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A beech jet 400 blows the left tire on landing at mem after a diversion created by the loss of hydraulic fluid.
| Attributes | |
| ACN | 398817 |
| Time | |
| Date | 199804 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mem |
| State Reference | TN |
| Altitude | msl bound lower : 31000 msl bound upper : 43000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : mem tower : mem |
| Operator | general aviation : corporate |
| Make Model Name | Beechjet 400 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude landing other other |
| Route In Use | enroute : direct enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 93 flight time total : 5000 flight time type : 760 |
| ASRS Report | 398817 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 3000 flight time type : 100 |
| ASRS Report | 398805 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | other |
| Consequence | other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Climbing out of FL310, the hydraulic level low light came on. Gauge pressure was normal. Then right pump pressure low light came on. At that point we diverted to mem. Beginning of the descent, the left pump pressure low came on. At this point the gauge pressure fell to zero. We were able to get the gear and flaps down. Upon landing the left main tire was locked up. Due to this, the left main tire blew out on the rollout. We were able to maintain directional control and stop on a taxiway. Maintenance found the leak in hydraulics in a line which runs to the thrust reversers. A faulty o-ring was the cause. The cause of the left tire being locked up is only a guess. Possibly air in the lines. The checklist states to continue the flight if the pressure is normal. With the experience we had landing when the 'level low' light came on would be better. 1) if it was just a faulty light you know for sure by landing. 2) if it was leaking you would be on the ground before you had a complete failure, which would prevent air in the brake lines.
Original NASA ASRS Text
Title: A BEECH JET 400 BLOWS THE L TIRE ON LNDG AT MEM AFTER A DIVERSION CREATED BY THE LOSS OF HYD FLUID.
Narrative: CLBING OUT OF FL310, THE HYD LEVEL LOW LIGHT CAME ON. GAUGE PRESSURE WAS NORMAL. THEN R PUMP PRESSURE LOW LIGHT CAME ON. AT THAT POINT WE DIVERTED TO MEM. BEGINNING OF THE DSCNT, THE L PUMP PRESSURE LOW CAME ON. AT THIS POINT THE GAUGE PRESSURE FELL TO ZERO. WE WERE ABLE TO GET THE GEAR AND FLAPS DOWN. UPON LNDG THE L MAIN TIRE WAS LOCKED UP. DUE TO THIS, THE L MAIN TIRE BLEW OUT ON THE ROLLOUT. WE WERE ABLE TO MAINTAIN DIRECTIONAL CTL AND STOP ON A TXWY. MAINT FOUND THE LEAK IN HYDS IN A LINE WHICH RUNS TO THE THRUST REVERSERS. A FAULTY O-RING WAS THE CAUSE. THE CAUSE OF THE L TIRE BEING LOCKED UP IS ONLY A GUESS. POSSIBLY AIR IN THE LINES. THE CHKLIST STATES TO CONTINUE THE FLT IF THE PRESSURE IS NORMAL. WITH THE EXPERIENCE WE HAD LNDG WHEN THE 'LEVEL LOW' LIGHT CAME ON WOULD BE BETTER. 1) IF IT WAS JUST A FAULTY LIGHT YOU KNOW FOR SURE BY LNDG. 2) IF IT WAS LEAKING YOU WOULD BE ON THE GND BEFORE YOU HAD A COMPLETE FAILURE, WHICH WOULD PREVENT AIR IN THE BRAKE LINES.
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.