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A B767-300 was dispatched after swapping the captainsouth defective oxygen mask with the second observersouth. Second observersouth seat deferred as inoperative.
| Attributes | |
| ACN | 638623 |
| Time | |
| Date | 200411 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 15 |
| ASRS Report | 638623 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 5 |
| ASRS Report | 638624 |
| Events | |
| Anomaly | maintenance problem : non compliance with mel maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 3 |
| Resolutory Action | none taken : detected after the fact |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : installation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
I had a gate call just prior to pushback. The call was captainsouth oxygen mask stuck in test. I could not get the mask to shut off. In order to prevent a delay, I decided to swap the captainsouth oxygen mask with the secondary observersouth. The captainsouth mask checked ok. I wanted to defer the secondary observersouth seat. The mechanic who was with me started the paperwork. I told him I was going to send the bad mask back to the shop for repair, and not install it in the aircraft. He asked me if you could do that. I told him I didnT see why not. He finished the paperwork and released the aircraft. I sent the log sheet after the aircraft had left. The coordinator called 10 mins later and told me I should not have removed the mask and the wrong MEL was used. The aircraft flew 2 legs before the new mask was reinstalled.
Original NASA ASRS Text
Title: A B767-300 WAS DISPATCHED AFTER SWAPPING THE CAPTS DEFECTIVE OXYGEN MASK WITH THE SECOND OBSERVERS. SECOND OBSERVERS SEAT DEFERRED AS INOP.
Narrative: I HAD A GATE CALL JUST PRIOR TO PUSHBACK. THE CALL WAS CAPTS OXYGEN MASK STUCK IN TEST. I COULD NOT GET THE MASK TO SHUT OFF. IN ORDER TO PREVENT A DELAY, I DECIDED TO SWAP THE CAPTS OXYGEN MASK WITH THE SECONDARY OBSERVERS. THE CAPTS MASK CHKED OK. I WANTED TO DEFER THE SECONDARY OBSERVERS SEAT. THE MECH WHO WAS WITH ME STARTED THE PAPERWORK. I TOLD HIM I WAS GOING TO SEND THE BAD MASK BACK TO THE SHOP FOR REPAIR, AND NOT INSTALL IT IN THE ACFT. HE ASKED ME IF YOU COULD DO THAT. I TOLD HIM I DIDNT SEE WHY NOT. HE FINISHED THE PAPERWORK AND RELEASED THE ACFT. I SENT THE LOG SHEET AFTER THE ACFT HAD LEFT. THE COORDINATOR CALLED 10 MINS LATER AND TOLD ME I SHOULD NOT HAVE REMOVED THE MASK AND THE WRONG MEL WAS USED. THE ACFT FLEW 2 LEGS BEFORE THE NEW MASK WAS REINSTALLED.
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.