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A CRJ700 in maintenance check a technician finds a filter bowl differential pressure indicator popped. Reset indicator button. New job card requires filter replacement and system contamination test.
| Attributes | |
| ACN | 703569 |
| Time | |
| Date | 200606 |
| 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 : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 703569 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 702317 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : tooling contributing factor : work cards performance deficiency : repair performance deficiency : training performance deficiency : non compliance with legal requirements performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Chart Or Publication Maintenance Human Performance Aircraft |
| Primary Problem | Chart Or Publication |
Narrative:
There was a filter button popped on the hydraulic system #3. In the past all that was required is that if it was not a recurrent problem that the button be pushed. The new work wanted you to do a contamination check and if contaminated you flush the system and change the filter. I did a visual inspection and found no metal; so I changed the filter and I thought I was good to go. I came to find out that a sample has to be taken and tested with a kit or the entire hydraulic system has to be drained and service along with changing the filter; and system bleed. I drained the entire system #3; 2 days later which makes me think that I am now fully complying with the requirement.
Original NASA ASRS Text
Title: A CRJ700 IN MAINT CHK A TECHNICIAN FINDS A FILTER BOWL DIFFERENTIAL PRESSURE INDICATOR POPPED. RESET INDICATOR BUTTON. NEW JOB CARD REQUIRES FILTER REPLACEMENT AND SYS CONTAMINATION TEST.
Narrative: THERE WAS A FILTER BUTTON POPPED ON THE HYD SYS #3. IN THE PAST ALL THAT WAS REQUIRED IS THAT IF IT WAS NOT A RECURRENT PROB THAT THE BUTTON BE PUSHED. THE NEW WORK WANTED YOU TO DO A CONTAMINATION CHK AND IF CONTAMINATED YOU FLUSH THE SYS AND CHANGE THE FILTER. I DID A VISUAL INSPECTION AND FOUND NO METAL; SO I CHANGED THE FILTER AND I THOUGHT I WAS GOOD TO GO. I CAME TO FIND OUT THAT A SAMPLE HAS TO BE TAKEN AND TESTED WITH A KIT OR THE ENTIRE HYD SYS HAS TO BE DRAINED AND SVC ALONG WITH CHANGING THE FILTER; AND SYS BLEED. I DRAINED THE ENTIRE SYS #3; 2 DAYS LATER WHICH MAKES ME THINK THAT I AM NOW FULLY COMPLYING WITH THE REQUIREMENT.
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.