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A B767 had an EICAS status message 'reverser iso valve.' technician reports unable to troubleshoot system due to captain improperly clearing the message.
| Attributes | |
| ACN | 653562 |
| Time | |
| Date | 200503 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tower : mlb.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 653562 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : eicas warning other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other Other |
| Factors | |
| Maintenance | contributing factor : manuals performance deficiency : testing performance deficiency : fault isolation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
On mar/tue/05; I was called to aircraft X; trip X; to ZZZ for a left reverser iso valve status message. When arriving to the aircraft; the item was not entered in the logbook. I asked captain to please enter the discrepancy into the logbook; which he did. While on the phone with technical services and my lead technician for the proper fault isolation manual procedures; captain approached me in a hostile; threatening and intimidating manner; accusing me of purposely trying to delay the flight. He then informed me that he had and cleared the status message himself from the EICAS page. Captain accomplished unauthorized maintenance; therefore; I was unable to properly troubleshoot the maintenance problem per the fault isolation manual. I tried to duplicate the discrepancy by running the left engine and operated the left thrust reverser with no faults; noted; see item #49 in logbook.
Original NASA ASRS Text
Title: A B767 HAD AN EICAS STATUS MESSAGE 'REVERSER ISO VALVE.' TECHNICIAN RPTS UNABLE TO TROUBLESHOOT SYS DUE TO CAPT IMPROPERLY CLRING THE MESSAGE.
Narrative: ON MAR/TUE/05; I WAS CALLED TO ACFT X; TRIP X; TO ZZZ FOR A L REVERSER ISO VALVE STATUS MESSAGE. WHEN ARRIVING TO THE ACFT; THE ITEM WAS NOT ENTERED IN THE LOGBOOK. I ASKED CAPT TO PLEASE ENTER THE DISCREPANCY INTO THE LOGBOOK; WHICH HE DID. WHILE ON THE PHONE WITH TECHNICAL SVCS AND MY LEAD TECHNICIAN FOR THE PROPER FAULT ISOLATION MANUAL PROCS; CAPT APCHED ME IN A HOSTILE; THREATENING AND INTIMIDATING MANNER; ACCUSING ME OF PURPOSELY TRYING TO DELAY THE FLT. HE THEN INFORMED ME THAT HE HAD AND CLRED THE STATUS MESSAGE HIMSELF FROM THE EICAS PAGE. CAPT ACCOMPLISHED UNAUTH MAINT; THEREFORE; I WAS UNABLE TO PROPERLY TROUBLESHOOT THE MAINT PROB PER THE FAULT ISOLATION MANUAL. I TRIED TO DUPLICATE THE DISCREPANCY BY RUNNING THE L ENG AND OPERATED THE L THRUST REVERSER WITH NO FAULTS; NOTED; SEE ITEM #49 IN LOGBOOK.
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.