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A B757-200 was dispatched in non compliance after rigging flight control cables with an inaccurate tensiometer reading low.
| Attributes | |
| ACN | 514797 |
| Time | |
| Date | 200106 |
| Day | Wed |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| 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 : person 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : tooling contributing factor : manuals performance deficiency : non compliance with legal requirements performance deficiency : testing |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
| Situations | |
| Publication | MAINTENANCE PROCEDURES |
Narrative:
I found that the cable tensiometer TEN9004 was inaccurate on aircraft X by at least 1/5 or more on the low side when compared with 3 other tensiometers. I also used this tensiometer on aircraft Y for the ailerons and this tool was also used for the brakes and the aircraft elevators since these cables were disconnected for other maintenance. I strongly believe that this aircraft and other aircraft which this tool was used on are now not properly rigged and could pose a severe liability to both the aircraft and anyone on board.
Original NASA ASRS Text
Title: A B757-200 WAS DISPATCHED IN NON COMPLIANCE AFTER RIGGING FLT CTL CABLES WITH AN INACCURATE TENSIOMETER READING LOW.
Narrative: I FOUND THAT THE CABLE TENSIOMETER TEN9004 WAS INACCURATE ON ACFT X BY AT LEAST 1/5 OR MORE ON THE LOW SIDE WHEN COMPARED WITH 3 OTHER TENSIOMETERS. I ALSO USED THIS TENSIOMETER ON ACFT Y FOR THE AILERONS AND THIS TOOL WAS ALSO USED FOR THE BRAKES AND THE ACFT ELEVATORS SINCE THESE CABLES WERE DISCONNECTED FOR OTHER MAINT. I STRONGLY BELIEVE THAT THIS ACFT AND OTHER ACFT WHICH THIS TOOL WAS USED ON ARE NOW NOT PROPERLY RIGGED AND COULD POSE A SEVERE LIABILITY TO BOTH THE ACFT AND ANYONE ON BOARD.
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.