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B737-700 flap switch contacts were wired to spare contacts. Documentation was completed for engineering. Later found deferred item was required for later switch replacement.
| Attributes | |
| ACN | 660521 |
| Time | |
| Date | 200506 |
| 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 | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| ASRS Report | 660521 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation non adherence : far non adherence : published procedure non adherence : company policies |
| Independent Detector | other other : 3 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : work cards performance deficiency : logbook entry performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Chart Or Publication Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Took a turn over from previous shift guy that was going to use an alternate connection (spare contacts) on the 5138 switch. The maintenance guy documented it in logbook. The work was done on my shift. A maintenance form was generated to change switch as we normally do when we deviation from the wiring diagram. I later found out on the morning of jun/sat/05 that I should have assigned MEL 32-21. This morning (jun/sat/05) contract maintenance was called to assign MEL 32-21 to aircraft. I was not aware of assigning an MEL to a switch in which we pick up spare contacts. To my knowledge in the past we would do a maintenance form to reflect deviation and have it changed out at next maintenance visit.
Original NASA ASRS Text
Title: B737-700 FLAP SWITCH CONTACTS WERE WIRED TO SPARE CONTACTS. DOCUMENTATION WAS COMPLETED FOR ENGINEERING. LATER FOUND DEFERRED ITEM WAS REQUIRED FOR LATER SWITCH REPLACEMENT.
Narrative: TOOK A TURN OVER FROM PREVIOUS SHIFT GUY THAT WAS GOING TO USE AN ALTERNATE CONNECTION (SPARE CONTACTS) ON THE 5138 SWITCH. THE MAINT GUY DOCUMENTED IT IN LOGBOOK. THE WORK WAS DONE ON MY SHIFT. A MAINT FORM WAS GENERATED TO CHANGE SWITCH AS WE NORMALLY DO WHEN WE DEV FROM THE WIRING DIAGRAM. I LATER FOUND OUT ON THE MORNING OF JUN/SAT/05 THAT I SHOULD HAVE ASSIGNED MEL 32-21. THIS MORNING (JUN/SAT/05) CONTRACT MAINT WAS CALLED TO ASSIGN MEL 32-21 TO ACFT. I WAS NOT AWARE OF ASSIGNING AN MEL TO A SWITCH IN WHICH WE PICK UP SPARE CONTACTS. TO MY KNOWLEDGE IN THE PAST WE WOULD DO A MAINT FORM TO REFLECT DEV AND HAVE IT CHANGED OUT AT NEXT MAINT VISIT.
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.