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Mechanic placed 'danger do not operate' tags in cockpit of a B777-200 prior to working in the tail section of aircraft; only to find out later; they were removed while he was still performing maintenance.
| Attributes | |
| ACN | 801709 |
| Time | |
| Date | 200805 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B777-200 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 801709 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Factors | |
| Maintenance | performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Company Maintenance Human Performance Aircraft |
| Primary Problem | Ambiguous |
Narrative:
While working on aircraft X; I placed 'danger do not operate' tags in cockpit to prevent operation of system when I was working in the tail section of aircraft. After completion of maintenance; I went to remove my tags from the cockpit and found them missing. The only people on the aircraft were the cleaning crew. I reported this to my supervisor. Cleaning department needs to understand the nature of what could have happened to myself or another mechanic.
Original NASA ASRS Text
Title: MECHANIC PLACED 'DANGER DO NOT OPERATE' TAGS IN COCKPIT OF A B777-200 PRIOR TO WORKING IN THE TAIL SECTION OF ACFT; ONLY TO FIND OUT LATER; THEY WERE REMOVED WHILE HE WAS STILL PERFORMING MAINT.
Narrative: WHILE WORKING ON ACFT X; I PLACED 'DANGER DO NOT OPERATE' TAGS IN COCKPIT TO PREVENT OP OF SYS WHEN I WAS WORKING IN THE TAIL SECTION OF ACFT. AFTER COMPLETION OF MAINT; I WENT TO REMOVE MY TAGS FROM THE COCKPIT AND FOUND THEM MISSING. THE ONLY PEOPLE ON THE ACFT WERE THE CLEANING CREW. I RPTED THIS TO MY SUPVR. CLEANING DEPT NEEDS TO UNDERSTAND THE NATURE OF WHAT COULD HAVE HAPPENED TO MYSELF OR ANOTHER MECH.
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.