 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An overhaul shop reports P&west 2000 engines during #4 bearing scavenge valve overhauls are not tested per vendor's manual due lack of test equipment.
| Attributes | |
| ACN | 499432 |
| Time | |
| Date | 200101 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 7 |
| ASRS Report | 499432 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 499431 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far non adherence : company policies |
| Independent Detector | other other : person 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : engineering procedure performance deficiency : repair performance deficiency : testing |
| Supplementary | |
| Problem Areas | Company Maintenance Human Performance Chart Or Publication Aircraft |
| Primary Problem | Flight Crew Human Performance |
| Situations | |
| Publication | P AND W MANUAL |
Narrative:
At the end of 20 hours of training in the repair and overhaul of this valve, I made 3 valves svcable and returned them to stock. At that time, I reviewed the joint document and realized that some of the testing required to make a unit svcable after overhaul had not been accomplished. I asked my trainer about it and was told that we did not have the equipment to perform all the tests. I then went to my lead wxvx and he and I informed our team leader XXXZ of the situation. She ordered us to hold all the other units I was working on OTS pending a review by the engineering department.
Original NASA ASRS Text
Title: AN OVERHAUL SHOP RPTS P&W 2000 ENGS DURING #4 BEARING SCAVENGE VALVE OVERHAULS ARE NOT TESTED PER VENDOR'S MANUAL DUE LACK OF TEST EQUIP.
Narrative: AT THE END OF 20 HRS OF TRAINING IN THE REPAIR AND OVERHAUL OF THIS VALVE, I MADE 3 VALVES SVCABLE AND RETURNED THEM TO STOCK. AT THAT TIME, I REVIEWED THE JOINT DOCUMENT AND REALIZED THAT SOME OF THE TESTING REQUIRED TO MAKE A UNIT SVCABLE AFTER OVERHAUL HAD NOT BEEN ACCOMPLISHED. I ASKED MY TRAINER ABOUT IT AND WAS TOLD THAT WE DID NOT HAVE THE EQUIP TO PERFORM ALL THE TESTS. I THEN WENT TO MY LEAD WXVX AND HE AND I INFORMED OUR TEAM LEADER XXXZ OF THE SIT. SHE ORDERED US TO HOLD ALL THE OTHER UNITS I WAS WORKING ON OTS PENDING A REVIEW BY THE ENGINEERING DEPT.
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.