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A B737-700 aircraft #1 engine fire handle not reset after maintenance work on vbv actuator. Fire handle pulled; but not tagged for being inoperative.
| Attributes | |
| ACN | 740298 |
| Time | |
| Date | 200705 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 740298 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
On aircraft had an eec fault 75-20441. So I isolated the problem to left vbv actuator. So I continued to right&right left vbv actuator on #1 engine per maintenance manual. Then performed installations test on the vbv actuator per maintenance manual. Tests X and test Y found no defects. Operations and leak check good. After correcting the problem and before closing engine cowls I took it upon myself to pull #1 engine fire handle because techs were cleaning the cockpit and did not want to shut down power. After all this I forgot to reset fire handle. I should have pulled and tagged the fire handle then it would have been more visible.
Original NASA ASRS Text
Title: A B737-700 ACFT #1 ENGINE FIRE HANDLE NOT RESET AFTER MAINT WORK ON VBV ACTUATOR. FIRE HANDLE PULLED; BUT NOT TAGGED FOR BEING INOP.
Narrative: ON ACFT HAD AN EEC FAULT 75-20441. SO I ISOLATED THE PROB TO L VBV ACTUATOR. SO I CONTINUED TO R&R L VBV ACTUATOR ON #1 ENG PER MAINT MANUAL. THEN PERFORMED INSTALLATIONS TEST ON THE VBV ACTUATOR PER MAINT MANUAL. TESTS X AND TEST Y FOUND NO DEFECTS. OPS AND LEAK CHK GOOD. AFTER CORRECTING THE PROB AND BEFORE CLOSING ENG COWLS I TOOK IT UPON MYSELF TO PULL #1 ENG FIRE HANDLE BECAUSE TECHS WERE CLEANING THE COCKPIT AND DID NOT WANT TO SHUT DOWN PWR. AFTER ALL THIS I FORGOT TO RESET FIRE HANDLE. I SHOULD HAVE PULLED AND TAGGED THE FIRE HANDLE THEN IT WOULD HAVE BEEN MORE VISIBLE.
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.