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A B737-700 engine high pressure turbine air clearance control valve was replaced per the job card but bsu deactivation kit was signed off but not accomplished.
| Attributes | |
| ACN | 690445 |
| Time | |
| Date | 200603 |
| 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 | B737-700 |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 690445 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : powerplant technician : airframe |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : work cards performance deficiency : logbook entry performance deficiency : inspection performance deficiency : installation performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
Aircraft was issued for a hptacc (high pressure turbine air case cooling) valve leaking. I removed and replaced hptacc and performed leak check. No leak found from hptacc. I signed off and made reference to removing the bsu due to leak. I did not remove the bsu and replace with deactivation kit but mistakenly included it in the signoff of the hptacc.
Original NASA ASRS Text
Title: A B737-700 ENG HIGH PRESSURE TURBINE AIR CLRNC CTL VALVE WAS REPLACED PER THE JOB CARD BUT BSU DEACTIVATION KIT WAS SIGNED OFF BUT NOT ACCOMPLISHED.
Narrative: ACFT WAS ISSUED FOR A HPTACC (HIGH PRESSURE TURBINE AIR CASE COOLING) VALVE LEAKING. I REMOVED AND REPLACED HPTACC AND PERFORMED LEAK CHK. NO LEAK FOUND FROM HPTACC. I SIGNED OFF AND MADE REF TO REMOVING THE BSU DUE TO LEAK. I DID NOT REMOVE THE BSU AND REPLACE WITH DEACTIVATION KIT BUT MISTAKENLY INCLUDED IT IN THE SIGNOFF OF THE HPTACC.
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.