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At maximum gross weight, a departure B767 loses its tread from #6 tire, damaging the gear door side brace to the left gear, unknown to the crew. That fact becomes a problem when attempting to land at dfw, tx.
| Attributes | |
| ACN | 605411 |
| Time | |
| Date | 200401 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dfw.airport |
| State Reference | TX |
| Altitude | agl bound lower : 0 msl single value : 1500 |
| Aircraft 1 | |
| Controlling Facilities | tower : dfw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing : go around |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 605411 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| ASRS Report | 605412 |
| Events | |
| Anomaly | aircraft equipment problem : critical ground encounters : fod |
| Independent Detector | aircraft equipment other aircraft equipment : eicas sys other flight crewa other flight crewb |
| Resolutory Action | controller : provided flight assist flight crew : declared emergency flight crew : landed in emergency condition flight crew : executed go around |
| Consequence | faa : reviewed incident with flight crew other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
When gear was lowered for landing we got an amber gear light, no left gear down light and a left side brace EICAS message. This was at about 1500 ft so we cycled the gear and got the same results. Notified tower, declared an emergency, raised the gear and went around. Told departure that we needed time to run the checklist and talk to company. Fuel was now approximately 24000 pounds. We accomplished the left drag brace/side brace procedure. Maintenance also had us manually lower the gear. Still had unsafe gear indication and now had status message. 'Landing gear-monitor.' did a fly-by and both tower and maintenance reported that gear appeared to be down. Left the gear down and came back for an uneventful landing. Stopped on the runway, had the landing gear pinned and maintenance cleared us to taxi to the gate. Shut down at the gate with 16500 pounds. Maintenance came up to the cockpit and told us that the tread had separated from the #6 tire and knocked off the side brace monitor and also did some damage to the flaps. We did a 5 degree flap, maximum gross weight takeoff at departure airport. The takeoff felt normal and the flight attendants said that they did not experience anything unusual.
Original NASA ASRS Text
Title: AT MAX GROSS WT, A DEP B767 LOSES ITS TREAD FROM #6 TIRE, DAMAGING THE GEAR DOOR SIDE BRACE TO THE L GEAR, UNKNOWN TO THE CREW. THAT FACT BECOMES A PROB WHEN ATTEMPTING TO LAND AT DFW, TX.
Narrative: WHEN GEAR WAS LOWERED FOR LNDG WE GOT AN AMBER GEAR LIGHT, NO L GEAR DOWN LIGHT AND A L SIDE BRACE EICAS MESSAGE. THIS WAS AT ABOUT 1500 FT SO WE CYCLED THE GEAR AND GOT THE SAME RESULTS. NOTIFIED TWR, DECLARED AN EMER, RAISED THE GEAR AND WENT AROUND. TOLD DEP THAT WE NEEDED TIME TO RUN THE CHKLIST AND TALK TO COMPANY. FUEL WAS NOW APPROX 24000 LBS. WE ACCOMPLISHED THE L DRAG BRACE/SIDE BRACE PROC. MAINT ALSO HAD US MANUALLY LOWER THE GEAR. STILL HAD UNSAFE GEAR INDICATION AND NOW HAD STATUS MESSAGE. 'LNDG GEAR-MONITOR.' DID A FLY-BY AND BOTH TWR AND MAINT RPTED THAT GEAR APPEARED TO BE DOWN. LEFT THE GEAR DOWN AND CAME BACK FOR AN UNEVENTFUL LNDG. STOPPED ON THE RWY, HAD THE LNDG GEAR PINNED AND MAINT CLRED US TO TAXI TO THE GATE. SHUT DOWN AT THE GATE WITH 16500 LBS. MAINT CAME UP TO THE COCKPIT AND TOLD US THAT THE TREAD HAD SEPARATED FROM THE #6 TIRE AND KNOCKED OFF THE SIDE BRACE MONITOR AND ALSO DID SOME DAMAGE TO THE FLAPS. WE DID A 5 DEG FLAP, MAX GROSS WT TKOF AT DEP ARPT. THE TKOF FELT NORMAL AND THE FLT ATTENDANTS SAID THAT THEY DID NOT EXPERIENCE ANYTHING UNUSUAL.
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.