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|
Attributes | |
ACN | 475658 |
Time | |
Date | 200006 |
Day | Tue |
Local Time Of Day | 0001 To 0600 |
Place | |
Locale Reference | airport : sea.airport |
State Reference | WA |
Altitude | agl single value : 0 |
Environment | |
Flight Conditions | VMC |
Light | Dawn |
Aircraft 1 | |
Operator | common carrier : air carrier |
Make Model Name | MD-11 |
Operating Under FAR Part | Part 121 |
Flight Phase | landing : roll |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : atp pilot : multi engine pilot : flight engineer |
Experience | flight time last 90 days : 100 flight time total : 8500 flight time type : 4000 |
ASRS Report | 475658 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : multi engine pilot : instrument pilot : commercial |
Events | |
Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure |
Independent Detector | aircraft equipment other aircraft equipment : tire fail warning other flight crewa other flight crewb |
Resolutory Action | none taken : detected after the fact |
Consequence | other |
Factors | |
Maintenance | contributing factor : schedule pressure contributing factor : manuals performance deficiency : logbook entry performance deficiency : non compliance with legal requirements |
Supplementary | |
Problem Areas | Maintenance Human Performance Flight Crew Human Performance Aircraft Chart Or Publication |
Primary Problem | Maintenance Human Performance |
Narrative:
On landing runway 16L sea, slowing through 80 KTS, received a 'tire failure' warning on the ead and aural. First officer was flying using medium autobrakes and idle reverse (compliance with sea noise abatement) .landing was normal and deceleration rapid due to light weight -- approximately 380000 pounds. When the warning annunciated, I disconnected autobrakes (with control switch) and we stopped normally at runway 16L and taxiway M. I informed tower that we had a tire failure warning, that I would vacate the runway and stop at taxiway M and the parallel taxiway. This request was approved. We stopped and I held the brakes manually while first officer completed after landing checklist and called our maintenance. The airport had the runway and taxiway M inspected. No tire shrapnel and all tires still normal on aircraft. Our maintenance came out with a tug. They inspected all tires and checked psi on #8 which our synoptic showed no psi. All equipment normal. We shut down engines, xferred to APU power and got a clearance to be towed. Upon further consultation, our flight had been released with a brake psi indicator monitor inoperative and was noted on the release. However, due to other maintenance deferrals for that flight, the circuit breaker for the entire brake temperature/tire psi monitoring system had not been pulled as per the MEL maintenance procedure. As a consequence, the warning system sensed a low/no psi in tire #8 and activated 'tire failure' warnings. Had I had a chance to review the maintenance procedure for this item, I would have been aware that the system should have been disabled.
Original NASA ASRS Text
Title: AN MD11 ON LNDG ROLL RECEIVED A 'TIRE FAILURE WARNING' CAUSED BY INCOMPLETE MEL PROCS USED WHEN DEFERRING #8 TIRE BRAKE MONITOR.
Narrative: ON LNDG RWY 16L SEA, SLOWING THROUGH 80 KTS, RECEIVED A 'TIRE FAILURE' WARNING ON THE EAD AND AURAL. FO WAS FLYING USING MEDIUM AUTOBRAKES AND IDLE REVERSE (COMPLIANCE WITH SEA NOISE ABATEMENT) .LNDG WAS NORMAL AND DECELERATION RAPID DUE TO LIGHT WT -- APPROX 380000 LBS. WHEN THE WARNING ANNUNCIATED, I DISCONNECTED AUTOBRAKES (WITH CTL SWITCH) AND WE STOPPED NORMALLY AT RWY 16L AND TXWY M. I INFORMED TWR THAT WE HAD A TIRE FAILURE WARNING, THAT I WOULD VACATE THE RWY AND STOP AT TXWY M AND THE PARALLEL TXWY. THIS REQUEST WAS APPROVED. WE STOPPED AND I HELD THE BRAKES MANUALLY WHILE FO COMPLETED AFTER LNDG CHKLIST AND CALLED OUR MAINT. THE ARPT HAD THE RWY AND TXWY M INSPECTED. NO TIRE SHRAPNEL AND ALL TIRES STILL NORMAL ON ACFT. OUR MAINT CAME OUT WITH A TUG. THEY INSPECTED ALL TIRES AND CHKED PSI ON #8 WHICH OUR SYNOPTIC SHOWED NO PSI. ALL EQUIP NORMAL. WE SHUT DOWN ENGS, XFERRED TO APU PWR AND GOT A CLRNC TO BE TOWED. UPON FURTHER CONSULTATION, OUR FLT HAD BEEN RELEASED WITH A BRAKE PSI INDICATOR MONITOR INOP AND WAS NOTED ON THE RELEASE. HOWEVER, DUE TO OTHER MAINT DEFERRALS FOR THAT FLT, THE CIRCUIT BREAKER FOR THE ENTIRE BRAKE TEMP/TIRE PSI MONITORING SYS HAD NOT BEEN PULLED AS PER THE MEL MAINT PROC. AS A CONSEQUENCE, THE WARNING SYS SENSED A LOW/NO PSI IN TIRE #8 AND ACTIVATED 'TIRE FAILURE' WARNINGS. HAD I HAD A CHANCE TO REVIEW THE MAINT PROC FOR THIS ITEM, I WOULD HAVE BEEN AWARE THAT THE SYS SHOULD HAVE BEEN DISABLED.
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.