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An EMB140 was dispatched with pack pressure switch replaced. Switch installed was the same switch removed. Confusion with switches in darkness.
| Attributes | |
| ACN | 714988 |
| Time | |
| Date | 200608 |
| 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 | EMB ERJ 140 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 2 |
| ASRS Report | 714988 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | other other : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : tooling performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : installation |
| Supplementary | |
| Problem Areas | Aircraft Environmental Factor Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
On aug/sun/06; I changed an overpressure switch on aircraft for a pack problem. The cause of the problem was when I removed the old pressure switch; I placed it next to the new part (pressure switch). It was late and did not have proper lighting; was outside in the line doing the maintenance and put on same pressure switch that had removed. The problem was detected by parts personnel. The aircraft was layed overnight; parts was changed with new one. The aircraft did not have a delay; there were pack problems.
Original NASA ASRS Text
Title: AN EMB140 WAS DISPATCHED WITH PACK PRESSURE SWITCH REPLACED. SWITCH INSTALLED WAS THE SAME SWITCH REMOVED. CONFUSION WITH SWITCHES IN DARKNESS.
Narrative: ON AUG/SUN/06; I CHANGED AN OVERPRESSURE SWITCH ON ACFT FOR A PACK PROB. THE CAUSE OF THE PROB WAS WHEN I REMOVED THE OLD PRESSURE SWITCH; I PLACED IT NEXT TO THE NEW PART (PRESSURE SWITCH). IT WAS LATE AND DID NOT HAVE PROPER LIGHTING; WAS OUTSIDE IN THE LINE DOING THE MAINT AND PUT ON SAME PRESSURE SWITCH THAT HAD REMOVED. THE PROB WAS DETECTED BY PARTS PERSONNEL. THE ACFT WAS LAYED OVERNIGHT; PARTS WAS CHANGED WITH NEW ONE. THE ACFT DID NOT HAVE A DELAY; THERE WERE PACK PROBS.
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.