37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 358875 |
Time | |
Date | 199701 |
Day | Thu |
Local Time Of Day | 1201 To 1800 |
Place | |
Locale Reference | airport : eyw |
State Reference | FL |
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 | Brasilia EMB-120 All Series |
Operating Under FAR Part | Part 135 |
Navigation In Use | Other Other |
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 : 215 flight time total : 12000 flight time type : 6500 |
ASRS Report | 358875 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : commercial pilot : instrument |
Events | |
Anomaly | aircraft equipment problem : less severe |
Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
Resolutory Action | flight crew : overcame equipment problem flight crew : declared emergency |
Consequence | Other |
Supplementary | |
Primary Problem | Aircraft |
Narrative:
Aircraft touched down on centerline and on airspeed, but began an immediate right drift on touchdown. Rudder and power used to regain runway lineup. Anti-skid warning came on shortly after touchdown. Tower reported heavy smoke from right main landing gear. Suspected brake and tire problem, so no brakes were used on rollout. I used engine reverse to stop the aircraft. Crash crew reported inboard main tire flat, outboard was ok. Appears right inboard brake was locked at touchdown which ground tire and blew out same on landing roll. No damage to aircraft (except tire). No injuries or other problems to crew or passenger. Callback conversation with reporter revealed the following information: reporter later talked to maintenance and was informed that the hydraulic pressure restrictor valve malfunctioned (located on the strut near the fuse system), trapping pressure of 3000 pounds. Normal maximum system pressure is 1200 pounds. This malfunction probably occurred when the gear came up after departure, when the autobraking actuated (stops rotation in the well).
Original NASA ASRS Text
Title: AN E120'S MAIN GEAR INBOARD TIRE FAILED UPON LNDG AS A RESULT OF A LOCKED BRAKE. THE BRAKE MAY HAVE LOCKED DURING AUTOBRAKING AT GEAR RETRACTION INTO THE WHEEL WELL WHEN THE HYD SYS PRESSURE BECAME TRAPPED BY A MALFUNCTIONING VALVE.
Narrative: ACFT TOUCHED DOWN ON CTRLINE AND ON AIRSPD, BUT BEGAN AN IMMEDIATE R DRIFT ON TOUCHDOWN. RUDDER AND PWR USED TO REGAIN RWY LINEUP. ANTI-SKID WARNING CAME ON SHORTLY AFTER TOUCHDOWN. TWR RPTED HVY SMOKE FROM R MAIN LNDG GEAR. SUSPECTED BRAKE AND TIRE PROB, SO NO BRAKES WERE USED ON ROLLOUT. I USED ENG REVERSE TO STOP THE ACFT. CRASH CREW RPTED INBOARD MAIN TIRE FLAT, OUTBOARD WAS OK. APPEARS R INBOARD BRAKE WAS LOCKED AT TOUCHDOWN WHICH GND TIRE AND BLEW OUT SAME ON LNDG ROLL. NO DAMAGE TO ACFT (EXCEPT TIRE). NO INJURIES OR OTHER PROBS TO CREW OR PAX. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR LATER TALKED TO MAINT AND WAS INFORMED THAT THE HYD PRESSURE RESTRICTOR VALVE MALFUNCTIONED (LOCATED ON THE STRUT NEAR THE FUSE SYS), TRAPPING PRESSURE OF 3000 LBS. NORMAL MAX SYS PRESSURE IS 1200 LBS. THIS MALFUNCTION PROBABLY OCCURRED WHEN THE GEAR CAME UP AFTER DEP, WHEN THE AUTOBRAKING ACTUATED (STOPS ROTATION IN THE WELL).
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.