|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||airport : ewr|
|Altitude||agl bound lower : 0|
agl bound upper : 0
|Operator||common carrier : air carrier|
|Make Model Name||Large Transport, Low Wing, 2 Turbojet Eng|
|Navigation In Use||Other |
|Flight Phase||landing other|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
pilot : flight engineer
|Experience||flight time last 90 days : 150|
flight time total : 18000
flight time type : 1000
|Affiliation||company : air carrier|
|Function||other personnel other|
|Anomaly||aircraft equipment problem : critical|
other anomaly other
|Independent Detector||other other : unspecified|
|Resolutory Action||none taken : detected after the fact|
|Consequence||faa : investigated|
|Air Traffic Incident||other|
On landing ewr 22L lost #7 tire and wheel. T/D, rollout, braking all normal with no abnormal indications at all. Parked at gate ewr and was informed by crew chief that #7 tire and wheel were missing. Informed ewr ground control on 121.8 to check runway 22L for debris. End of incident. Evidently #7 brake was locked and antiskid was not working. Entire wheel assembly was missing. I assume it sheared off on T/D which could have resulted in a fire or failure of other tires on that gear. Why the antiskid failed or the tire and wheel came off, I don't know. It could have been serious. Callback conversation with reporter revealed the following: this is second incident of this type on this air carrier and there are about 7 or 8 occurrences in the industry with this model aircraft. Wheel and brake assembly were found next morning intact on airport with no skid damaged on tire, so must have twisted off immediately on T/D. On climb out of previous station did get anti skid failure light, but it went out on descent, so may have been caused by heat from seized bearing and then went out when later cooled. Apparently problem always occurs on #7 wheel. No one on flight felt anything and did not realize wheel gone until pointed out after gate arrival.
Original NASA ASRS Text
Title: ACR LGT LOST NUMBER 7 MAIN MOUNT ON LNDG.
Narrative: ON LNDG EWR 22L LOST #7 TIRE AND WHEEL. T/D, ROLLOUT, BRAKING ALL NORMAL WITH NO ABNORMAL INDICATIONS AT ALL. PARKED AT GATE EWR AND WAS INFORMED BY CREW CHIEF THAT #7 TIRE AND WHEEL WERE MISSING. INFORMED EWR GND CTL ON 121.8 TO CHK RWY 22L FOR DEBRIS. END OF INCIDENT. EVIDENTLY #7 BRAKE WAS LOCKED AND ANTISKID WAS NOT WORKING. ENTIRE WHEEL ASSEMBLY WAS MISSING. I ASSUME IT SHEARED OFF ON T/D WHICH COULD HAVE RESULTED IN A FIRE OR FAILURE OF OTHER TIRES ON THAT GEAR. WHY THE ANTISKID FAILED OR THE TIRE AND WHEEL CAME OFF, I DON'T KNOW. IT COULD HAVE BEEN SERIOUS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: THIS IS SECOND INCIDENT OF THIS TYPE ON THIS ACR AND THERE ARE ABOUT 7 OR 8 OCCURRENCES IN THE INDUSTRY WITH THIS MODEL ACFT. WHEEL AND BRAKE ASSEMBLY WERE FOUND NEXT MORNING INTACT ON ARPT WITH NO SKID DAMAGED ON TIRE, SO MUST HAVE TWISTED OFF IMMEDIATELY ON T/D. ON CLBOUT OF PREVIOUS STATION DID GET ANTI SKID FAILURE LIGHT, BUT IT WENT OUT ON DSCNT, SO MAY HAVE BEEN CAUSED BY HEAT FROM SEIZED BEARING AND THEN WENT OUT WHEN LATER COOLED. APPARENTLY PROB ALWAYS OCCURS ON #7 WHEEL. NO ONE ON FLT FELT ANYTHING AND DID NOT REALIZE WHEEL GONE UNTIL POINTED OUT AFTER GATE ARR.
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.