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A B737-300 was dispatched in non compliance with a deferred #4 main tire exceeding flight limits for replacement.
| Attributes | |
| ACN | 474668 |
| Time | |
| Date | 200005 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : vabb.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 220 flight time total : 12000 flight time type : 3000 |
| ASRS Report | 474668 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 8225 flight time type : 3025 |
| ASRS Report | 473877 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : repair |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance Company |
| Primary Problem | Maintenance Human Performance |
Narrative:
B737-300 aircraft #xyz log #wvwv '#4 main tire showing cord' written up on may/wed/00, air carrier flight abc. Repetitive MEL expiration was reviewed prior to departure of air carrier flight abc may/wed/00. The number of lndgs remaining on the #4 main tire were miscalculated by maintenance, the first officer, and myself. We had a mechanic in the cockpit, to fix another problem, and still didn't catch the mistake. We should have had it changed! Aircraft flown to XXX, no problems. Flight abc may/wed/00 XXX direct ZZZ. (The logbook had so many entries, and several pages were pulled over the last 2 days, a simple count of lndgs was not possible.)
Original NASA ASRS Text
Title: A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH A DEFERRED #4 MAIN TIRE EXCEEDING FLT LIMITS FOR REPLACEMENT.
Narrative: B737-300 ACFT #XYZ LOG #WVWV '#4 MAIN TIRE SHOWING CORD' WRITTEN UP ON MAY/WED/00, ACR FLT ABC. REPETITIVE MEL EXPIRATION WAS REVIEWED PRIOR TO DEP OF ACR FLT ABC MAY/WED/00. THE NUMBER OF LNDGS REMAINING ON THE #4 MAIN TIRE WERE MISCALCULATED BY MAINT, THE FO, AND MYSELF. WE HAD A MECH IN THE COCKPIT, TO FIX ANOTHER PROB, AND STILL DIDN'T CATCH THE MISTAKE. WE SHOULD HAVE HAD IT CHANGED! ACFT FLOWN TO XXX, NO PROBS. FLT ABC MAY/WED/00 XXX DIRECT ZZZ. (THE LOGBOOK HAD SO MANY ENTRIES, AND SEVERAL PAGES WERE PULLED OVER THE LAST 2 DAYS, A SIMPLE COUNT OF LNDGS WAS NOT POSSIBLE.)
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.