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A B757-200 crew reports EICAS status message 'oil filter' on continuously. Maintenance controller advises do not shut engine down but monitor pressure and quantity.
| Attributes | |
| ACN | 540510 |
| Time | |
| Date | 200203 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector other personnel other |
| Qualification | technician : inspection authority technician : airframe technician : powerplant |
| Experience | maintenance technician : 13 |
| ASRS Report | 540510 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : eicas oil filter msg other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Maintenance Human Performance Chart Or Publication Aircraft |
| Primary Problem | Aircraft |
Narrative:
Flight ZZZ to ZZZ1. Called engine maintenance controller indicating right engine oil filter message. The status message indicated an impending bypass condition. Their flight manual told crew to retard throttle until message goes away and land at nearest suitable airport. If message remained, shutdown the engine. I advised crew not to follow in-flight shutdown procedures since oil temperature, oil pressure, oil quantity and vibration indications were normal. Aircraft arrived with no incident. Message was intermittent indicating this was an indication only problem. Flight crew, dispatch, and duty manager concurred to continue to destination. I believe the flight manual is incorrect telling them to shut down engine without xchking and confirming. MEL has no relief for this condition, but maintenance manual 79-21-00 page 111 allows 25 hour relief for belt P switch change provided magnetic chip detectors and filter are checked for metal in screen. Flight manual does not differentiate between an EICAS or status message.
Original NASA ASRS Text
Title: A B757-200 CREW RPTS EICAS STATUS MESSAGE 'OIL FILTER' ON CONTINUOUSLY. MAINT CTLR ADVISES DO NOT SHUT ENG DOWN BUT MONITOR PRESSURE AND QUANTITY.
Narrative: FLT ZZZ TO ZZZ1. CALLED ENG MAINT CTLR INDICATING R ENG OIL FILTER MESSAGE. THE STATUS MESSAGE INDICATED AN IMPENDING BYPASS CONDITION. THEIR FLT MANUAL TOLD CREW TO RETARD THROTTLE UNTIL MESSAGE GOES AWAY AND LAND AT NEAREST SUITABLE ARPT. IF MESSAGE REMAINED, SHUTDOWN THE ENG. I ADVISED CREW NOT TO FOLLOW INFLT SHUTDOWN PROCS SINCE OIL TEMP, OIL PRESSURE, OIL QUANTITY AND VIBRATION INDICATIONS WERE NORMAL. ACFT ARRIVED WITH NO INCIDENT. MESSAGE WAS INTERMITTENT INDICATING THIS WAS AN INDICATION ONLY PROB. FLC, DISPATCH, AND DUTY MGR CONCURRED TO CONTINUE TO DEST. I BELIEVE THE FLT MANUAL IS INCORRECT TELLING THEM TO SHUT DOWN ENG WITHOUT XCHKING AND CONFIRMING. MEL HAS NO RELIEF FOR THIS CONDITION, BUT MAINT MANUAL 79-21-00 PAGE 111 ALLOWS 25 HR RELIEF FOR BELT P SWITCH CHANGE PROVIDED MAGNETIC CHIP DETECTORS AND FILTER ARE CHKED FOR METAL IN SCREEN. FLT MANUAL DOES NOT DIFFERENTIATE BTWN AN EICAS OR STATUS MESSAGE.
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.