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|
Attributes | |
ACN | 639217 |
Time | |
Date | 200412 |
Day | Sun |
Local Time Of Day | 1201 To 1800 |
Place | |
Locale Reference | airport : lga.airport |
State Reference | NY |
Altitude | agl single value : 0 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Operator | common carrier : air carrier |
Make Model Name | B737 Undifferentiated or Other Model |
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 |
Experience | flight time last 90 days : 150 flight time total : 4500 flight time type : 1220 |
ASRS Report | 639217 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Events | |
Anomaly | aircraft equipment problem : critical |
Independent Detector | other controllerb other flight crewa |
Resolutory Action | none taken : anomaly accepted |
Consequence | other other |
Supplementary | |
Problem Areas | Aircraft Maintenance Human Performance |
Primary Problem | Aircraft |
Narrative:
During landing runway 22 rollout, lga tower advised us of a puff of smoke from our landing gear. As this advisory came shortly after automatic braking initiated, I surmised that it must be associated with the automatic braking. Used a considerable amount of reverse until taxi speed and attempted to clear runway at taxi speed from high speed turnoff. Braking and turning to right were ineffective, so I returned left to runway centerline until stopped. Was then able to clear runway slowly to right. Requested tower to visually see if I was still smoking before proceeding approximately 150 yards to company gate. Tower responded all normal, so I taxied to gate, whereupon after passenger disembarked, I visually inspected landing gear to find left outboard tire deflated. Later maintenance reported 5 lug nuts sheared on tire. Only 1 lug nut found still in hub cap -- other 4 missing. Crosswind upon landing had been 20 KT crosswind component. Used flaps 30 degrees, automatic brakes 2, with crosswind technique of 1) sideslip, and 2) crab taken out in flare in accordance with company procedures for strong xwinds on dry runway. The landing had been smooth, without any drift, and on centerline. Reverse and slowing normal until attempting to vacate runway (normal landing substantiation by copilot and 2 experienced flight attendants at aft aircraft stations). Suspect lug nuts overtorqued with subsequent shearing over time, which led to 'bead' separating and deflating the tire upon my landing. Most noteworthy was ineffective braking and difficult turning with blown tire. Lesson for me that blown tires severely effected braking capability, and that must be considered in any abort/landing with blown tire. I also would not prolong taxi with a known blown tire.
Original NASA ASRS Text
Title: B737 TIRE FAILURE DURING A XWIND LNDG AT LGA IS DISCOVERED WHEN TWR RPTS SMOKE FROM LNDG GEAR AND SUBSEQUENT STOPPING AND STEERING DIFFICULTIES ARE ENCOUNTERED.
Narrative: DURING LNDG RWY 22 ROLLOUT, LGA TWR ADVISED US OF A PUFF OF SMOKE FROM OUR LNDG GEAR. AS THIS ADVISORY CAME SHORTLY AFTER AUTO BRAKING INITIATED, I SURMISED THAT IT MUST BE ASSOCIATED WITH THE AUTO BRAKING. USED A CONSIDERABLE AMOUNT OF REVERSE UNTIL TAXI SPD AND ATTEMPTED TO CLR RWY AT TAXI SPD FROM HIGH SPD TURNOFF. BRAKING AND TURNING TO R WERE INEFFECTIVE, SO I RETURNED L TO RWY CTRLINE UNTIL STOPPED. WAS THEN ABLE TO CLR RWY SLOWLY TO R. REQUESTED TWR TO VISUALLY SEE IF I WAS STILL SMOKING BEFORE PROCEEDING APPROX 150 YARDS TO COMPANY GATE. TWR RESPONDED ALL NORMAL, SO I TAXIED TO GATE, WHEREUPON AFTER PAX DISEMBARKED, I VISUALLY INSPECTED LNDG GEAR TO FIND L OUTBOARD TIRE DEFLATED. LATER MAINT RPTED 5 LUG NUTS SHEARED ON TIRE. ONLY 1 LUG NUT FOUND STILL IN HUB CAP -- OTHER 4 MISSING. XWIND UPON LNDG HAD BEEN 20 KT XWIND COMPONENT. USED FLAPS 30 DEGS, AUTO BRAKES 2, WITH XWIND TECHNIQUE OF 1) SIDESLIP, AND 2) CRAB TAKEN OUT IN FLARE IN ACCORDANCE WITH COMPANY PROCS FOR STRONG XWINDS ON DRY RWY. THE LNDG HAD BEEN SMOOTH, WITHOUT ANY DRIFT, AND ON CTRLINE. REVERSE AND SLOWING NORMAL UNTIL ATTEMPTING TO VACATE RWY (NORMAL LNDG SUBSTANTIATION BY COPLT AND 2 EXPERIENCED FLT ATTENDANTS AT AFT ACFT STATIONS). SUSPECT LUG NUTS OVERTORQUED WITH SUBSEQUENT SHEARING OVER TIME, WHICH LED TO 'BEAD' SEPARATING AND DEFLATING THE TIRE UPON MY LNDG. MOST NOTEWORTHY WAS INEFFECTIVE BRAKING AND DIFFICULT TURNING WITH BLOWN TIRE. LESSON FOR ME THAT BLOWN TIRES SEVERELY EFFECTED BRAKING CAPABILITY, AND THAT MUST BE CONSIDERED IN ANY ABORT/LNDG WITH BLOWN TIRE. I ALSO WOULD NOT PROLONG TAXI WITH A KNOWN BLOWN TIRE.
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.