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An md-80 mechanic reports of finding two thermostats installed on the left side where only one ice protection anticipator and one thermostat should be located.
| Attributes | |
| ACN | 759857 |
| Time | |
| Date | 200710 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 759857 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : non compliance with legal requirements performance deficiency : installation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
I came onto shift and received a turnover from mr X on previous shift. He had just checked the part and serial numbers on aircraft X for the right side ice protection anticipator and thermostat. (Anticipator serial number XXXX and thermostat serial number YYYY.) I returned the logbook to the flight crew and was then was asked to go back out to verify the left side anticipator and serial number part and serial numbers. I discovered that there was a thermostat installed in the location of the anticipator. There were 2 thermostats installed on the left side instead of 1 thermostat and 1 anticipator. These parts look almost identical. I removed thermostat part number AAAA serial number BBBB and installed an anticipator.
Original NASA ASRS Text
Title: AN MD-80 MECHANIC REPORTS OF FINDING TWO THERMOSTATS INSTALLED ON THE LEFT SIDE WHERE ONLY ONE ICE PROTECTION ANTICIPATOR AND ONE THERMOSTAT SHOULD BE LOCATED.
Narrative: I CAME ONTO SHIFT AND RECEIVED A TURNOVER FROM MR X ON PREVIOUS SHIFT. HE HAD JUST CHKED THE PART AND SERIAL NUMBERS ON ACFT X FOR THE R SIDE ICE PROTECTION ANTICIPATOR AND THERMOSTAT. (ANTICIPATOR SERIAL NUMBER XXXX AND THERMOSTAT SERIAL NUMBER YYYY.) I RETURNED THE LOGBOOK TO THE FLT CREW AND WAS THEN WAS ASKED TO GO BACK OUT TO VERIFY THE L SIDE ANTICIPATOR AND SERIAL NUMBER PART AND SERIAL NUMBERS. I DISCOVERED THAT THERE WAS A THERMOSTAT INSTALLED IN THE LOCATION OF THE ANTICIPATOR. THERE WERE 2 THERMOSTATS INSTALLED ON THE L SIDE INSTEAD OF 1 THERMOSTAT AND 1 ANTICIPATOR. THESE PARTS LOOK ALMOST IDENTICAL. I REMOVED THERMOSTAT PART NUMBER AAAA SERIAL NUMBER BBBB AND INSTALLED AN ANTICIPATOR.
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.