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A B737-400 was found to have incorrect nose landing gear tires installed. Markings on tires indicated installation for B737-700, -900.
| Attributes | |
| ACN | 558700 |
| Time | |
| Date | 200208 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| ASRS Report | 558700 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : briefing performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Company Chart Or Publication Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
On walkaround, I noticed the nosewheel tires had 700/900 only written on both sides of the tires. We called maintenance control who researched the problem and contacted contract maintenance to come change the tires. We were advised of a 1 hour fix time and that the mechanics were working on another plane and would be along in a while. By the time they showed up, maintenance control had decided that these tires were ok to use on the 400. These tires had been on the aircraft since aug/tue/02, 24 days. Since these tires have a different dimension from regular 400 tires, maintenance control should have known that these tires were ok to use, and the limitation should have been removed from the tire markings.
Original NASA ASRS Text
Title: A B737-400 WAS FOUND TO HAVE INCORRECT NOSE LNDG GEAR TIRES INSTALLED. MARKINGS ON TIRES INDICATED INSTALLATION FOR B737-700, -900.
Narrative: ON WALKAROUND, I NOTICED THE NOSEWHEEL TIRES HAD 700/900 ONLY WRITTEN ON BOTH SIDES OF THE TIRES. WE CALLED MAINT CTL WHO RESEARCHED THE PROB AND CONTACTED CONTRACT MAINT TO COME CHANGE THE TIRES. WE WERE ADVISED OF A 1 HR FIX TIME AND THAT THE MECHS WERE WORKING ON ANOTHER PLANE AND WOULD BE ALONG IN A WHILE. BY THE TIME THEY SHOWED UP, MAINT CTL HAD DECIDED THAT THESE TIRES WERE OK TO USE ON THE 400. THESE TIRES HAD BEEN ON THE ACFT SINCE AUG/TUE/02, 24 DAYS. SINCE THESE TIRES HAVE A DIFFERENT DIMENSION FROM REGULAR 400 TIRES, MAINT CTL SHOULD HAVE KNOWN THAT THESE TIRES WERE OK TO USE, AND THE LIMITATION SHOULD HAVE BEEN REMOVED FROM THE TIRE MARKINGS.
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.