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An inspector reports tensiometers used to adjust flight control cables on B737-200, 300, 500 and 700 series are calibrated by a faulty standard.
| Attributes | |
| ACN | 547049 |
| Time | |
| Date | 200205 |
| Day | Mon |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90.tracon |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 547049 |
| Events | |
| Anomaly | non adherence : published procedure non adherence : far other anomaly other |
| Independent Detector | other other : person 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Factors | |
| Maintenance | contributing factor : tooling performance deficiency : non compliance with legal requirements performance deficiency : testing performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Environmental Factor Maintenance Human Performance Company |
| Primary Problem | Company |
Narrative:
In B bay there is a bucket full of shot with tape over the top hanging from a cable. The mechanics are to put a tensiometer on this to check before use. Nothing is sealed that insures there is the posted weight. It's just a guess that it is what is says. If they want a true test, would it be safer to get a calibrated cable to check on? Who knows if shot has been added or removed from this bucket.
Original NASA ASRS Text
Title: AN INSPECTOR RPTS TENSIOMETERS USED TO ADJUST FLT CTL CABLES ON B737-200, 300, 500 AND 700 SERIES ARE CALIBRATED BY A FAULTY STANDARD.
Narrative: IN B BAY THERE IS A BUCKET FULL OF SHOT WITH TAPE OVER THE TOP HANGING FROM A CABLE. THE MECHS ARE TO PUT A TENSIOMETER ON THIS TO CHK BEFORE USE. NOTHING IS SEALED THAT INSURES THERE IS THE POSTED WT. IT'S JUST A GUESS THAT IT IS WHAT IS SAYS. IF THEY WANT A TRUE TEST, WOULD IT BE SAFER TO GET A CALIBRATED CABLE TO CHK ON? WHO KNOWS IF SHOT HAS BEEN ADDED OR REMOVED FROM THIS BUCKET.
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.