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Mechanic is informed a trammel bar was found in the tail compartment of a B737-800; after he changed an elevator feel computer months earlier.
| Attributes | |
| ACN | 807599 |
| Time | |
| Date | 200807 |
| Local Time Of Day | 1201 To 1800 |
| 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 |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 23 |
| ASRS Report | 807599 |
| Events | |
| Anomaly | maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : briefing performance deficiency : non compliance with legal requirements performance deficiency : scheduled maintenance performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
I was assigned to verify failure of the elevator feel computer on aircraft XXX; my troubleshooting determined indeed that the elevator feel computer was leaking. I proceeded to replace it with a svcable unit. Today I was informed that when the aircraft entered heavy check they found a trammel bar in the tail compartment of the aircraft. I thought that I had returned all the tools to the tool crib; but inadvertently; the trammel bar was left behind without me being aware of it.
Original NASA ASRS Text
Title: MECHANIC IS INFORMED A TRAMMEL BAR WAS FOUND IN THE TAIL COMPARTMENT OF A B737-800; AFTER HE CHANGED AN ELEVATOR FEEL COMPUTER MONTHS EARLIER.
Narrative: I WAS ASSIGNED TO VERIFY FAILURE OF THE ELEVATOR FEEL COMPUTER ON ACFT XXX; MY TROUBLESHOOTING DETERMINED INDEED THAT THE ELEVATOR FEEL COMPUTER WAS LEAKING. I PROCEEDED TO REPLACE IT WITH A SVCABLE UNIT. TODAY I WAS INFORMED THAT WHEN THE ACFT ENTERED HVY CHK THEY FOUND A TRAMMEL BAR IN THE TAIL COMPARTMENT OF THE ACFT. I THOUGHT THAT I HAD RETURNED ALL THE TOOLS TO THE TOOL CRIB; BUT INADVERTENTLY; THE TRAMMEL BAR WAS LEFT BEHIND WITHOUT ME BEING AWARE OF IT.
Data retrieved from NASA's ASRS site as of May 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.