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A B737-400 technician replacing a borrowed aural warning unit noted the maintenance manual reference number was different from the manual reference used to install the borrowed unit. The procedures and test were the same.
| Attributes | |
| ACN | 638578 |
| Time | |
| Date | 200411 |
| Day | Tue |
| Local Time Of Day | 0001 To 0600 |
| 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 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 638578 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals performance deficiency : installation performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Chart Or Publication Maintenance Human Performance Aircraft |
| Primary Problem | Chart Or Publication |
Narrative:
While replacing the borrowed part which generated a log page, I noticed the maintenance manual reference I was working from (B737-400 31-26-41/401) was not the same as was used while installing it (B737-ng 31-51-04/401). I read through the ng reference and found no flight deck discrepancies (ie, pulled breakers) that may have come from using those procedures.
Original NASA ASRS Text
Title: A B737-400 TECHNICIAN REPLACING A BORROWED AURAL WARNING UNIT NOTED THE MAINT MANUAL REF NUMBER WAS DIFFERENT FROM THE MANUAL REF USED TO INSTALL THE BORROWED UNIT. THE PROCS AND TEST WERE THE SAME.
Narrative: WHILE REPLACING THE BORROWED PART WHICH GENERATED A LOG PAGE, I NOTICED THE MAINT MANUAL REF I WAS WORKING FROM (B737-400 31-26-41/401) WAS NOT THE SAME AS WAS USED WHILE INSTALLING IT (B737-NG 31-51-04/401). I READ THROUGH THE NG REF AND FOUND NO FLT DECK DISCREPANCIES (IE, PULLED BREAKERS) THAT MAY HAVE COME FROM USING THOSE PROCS.
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.