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A crj 700 was dispatched after nose landing gear and right main landing gear torque links were replaced and position proximity sensors were adjusted. After takeoff had ground shift warning. Found sensors incorrectly adjusted.
| Attributes | |
| ACN | 689328 |
| Time | |
| Date | 200602 |
| 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 | Regional Jet 700 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 689328 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 689043 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : lndg gear warning other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure contributing factor : manuals performance deficiency : non compliance with legal requirements performance deficiency : testing performance deficiency : logbook entry performance deficiency : installation |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Flight Crew Human Performance Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
I was assigned to replace the nose gear torque links. After finishing my task; I was asked to assist in finishing up the main landing gear replacements. After installation of all the torque links; I performed the 'position proximity sensor' test of the system with the aircraft on the ground. All proximity sensors were indicating normal; so I signed off the work I performed. The amm reference is very unclr about the installation of the targets; regarding which direction they should be installed. This was also my first time to perform this task.
Original NASA ASRS Text
Title: A CRJ 700 WAS DISPATCHED AFTER NOSE LNDG GEAR AND R MAIN LNDG GEAR TORQUE LINKS WERE REPLACED AND POS PROX SENSORS WERE ADJUSTED. AFTER TKOF HAD GND SHIFT WARNING. FOUND SENSORS INCORRECTLY ADJUSTED.
Narrative: I WAS ASSIGNED TO REPLACE THE NOSE GEAR TORQUE LINKS. AFTER FINISHING MY TASK; I WAS ASKED TO ASSIST IN FINISHING UP THE MAIN LNDG GEAR REPLACEMENTS. AFTER INSTALLATION OF ALL THE TORQUE LINKS; I PERFORMED THE 'POS PROX SENSOR' TEST OF THE SYS WITH THE ACFT ON THE GND. ALL PROX SENSORS WERE INDICATING NORMAL; SO I SIGNED OFF THE WORK I PERFORMED. THE AMM REF IS VERY UNCLR ABOUT THE INSTALLATION OF THE TARGETS; REGARDING WHICH DIRECTION THEY SHOULD BE INSTALLED. THIS WAS ALSO MY FIRST TIME TO PERFORM THIS TASK.
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.