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`A shop technician reports when accomplishing an engineering service order to reverser stow and deploy sensors the wrong test unit was called out and damaged sensors.
| Attributes | |
| ACN | 623085 |
| Time | |
| Date | 200406 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 623085 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 623084 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation 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 other |
| Factors | |
| Maintenance | contributing factor : engineering procedure performance deficiency : non compliance with legal requirements performance deficiency : fault isolation performance deficiency : testing |
| Supplementary | |
| Problem Areas | Chart Or Publication Maintenance Human Performance |
| Primary Problem | Chart Or Publication |
Narrative:
Sensor part number X used in thrust reverser harnesses on RB211. We produce these harnesses in ZZZ shop X per engineering service order X. It only says to check resistance. We were having a problem with the resistance reading and started asking questions. We were working with the ohm meter we were told was correct, but contacted engineer, supervisor, technician crew chief, stopped producing harnesses containing this sensor.
Original NASA ASRS Text
Title: `A SHOP TECHNICIAN RPTS WHEN ACCOMPLISHING AN ENGINEERING SVC ORDER TO REVERSER STOW AND DEPLOY SENSORS THE WRONG TEST UNIT WAS CALLED OUT AND DAMAGED SENSORS.
Narrative: SENSOR PART NUMBER X USED IN THRUST REVERSER HARNESSES ON RB211. WE PRODUCE THESE HARNESSES IN ZZZ SHOP X PER ENGINEERING SVC ORDER X. IT ONLY SAYS TO CHK RESISTANCE. WE WERE HAVING A PROB WITH THE RESISTANCE READING AND STARTED ASKING QUESTIONS. WE WERE WORKING WITH THE OHM METER WE WERE TOLD WAS CORRECT, BUT CONTACTED ENGINEER, SUPVR, TECHNICIAN CREW CHIEF, STOPPED PRODUCING HARNESSES CONTAINING THIS SENSOR.
Data retrieved from NASA's ASRS site as of July 2007 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.