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A B737-800 aircraft (2) ea main gear tire pressures were not serviced and the job card signature block was mistakenly marked north/a (not required).
| Attributes | |
| ACN | 735161 |
| Time | |
| Date | 200703 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 735161 |
| Events | |
| Anomaly | maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : scheduled maintenance performance deficiency : training |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Company |
| Primary Problem | Maintenance Human Performance |
Narrative:
On apr/xa/07 I was told that on mar/xa/07 I na'ed the tires servicing block on aircraft X with the pressure blocks on #3 and #4 tires reading 5 psi over the limits. The reason I did this was because the tires were still warm. According to the general manual; it says do not let air out of tires to bring into normal range when tires have not had an opportunity to cool. As I did not have the opportunity to check the tires when cool and I did let air out; I did not service the tires so I na'ed the signature block.
Original NASA ASRS Text
Title: A B737-800 ACFT (2) EA MAIN GEAR TIRE PRESSURES WERE NOT SERVICED AND THE JOB CARD SIGNATURE BLOCK WAS MISTAKENLY MARKED N/A (NOT REQUIRED).
Narrative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
Data retrieved from NASA's ASRS site as of January 2009 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.