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B757-200 captain reports how it is not possible to monitor oil consumption with no logbook entries. Right engine has more than double consumption over left engine.
| Attributes | |
| ACN | 708817 |
| Time | |
| Date | 200609 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 708817 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : manuals performance deficiency : logbook entry performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Flight Crew Human Performance Maintenance Human Performance |
| Primary Problem | Chart Or Publication |
Narrative:
In exchanging aircraft with inbound crew; captain advised maintenance had been called to service the right engine oil. Not entered in logbook (not a required entry). Oil was svced from 12-21+ pints indicated. Further review of the logbook showed that from aug/wed/06 to sep/fri/06 the left engine had received 29 pints while the right had received 86 pints. Having no flight times to reference for oil consumption/flight hour; and the engine being above minimum dispatch I elected to accept the airplane. My comment/event/question is this: with more than double consumption on the right engine over the left; and no oil service request/confirmation entries required; and missing entries on the bottom of the logbook page for oil added; how is the flight crew to know whether consumption is excessive and is; in fact; receiving all servicing inputs and monitoring same?
Original NASA ASRS Text
Title: B757-200 CAPT RPTS HOW IT IS NOT POSSIBLE TO MONITOR OIL CONSUMPTION WITH NO LOGBOOK ENTRIES. R ENG HAS MORE THAN DOUBLE CONSUMPTION OVER L ENG.
Narrative: IN EXCHANGING ACFT WITH INBOUND CREW; CAPT ADVISED MAINT HAD BEEN CALLED TO SVC THE R ENG OIL. NOT ENTERED IN LOGBOOK (NOT A REQUIRED ENTRY). OIL WAS SVCED FROM 12-21+ PINTS INDICATED. FURTHER REVIEW OF THE LOGBOOK SHOWED THAT FROM AUG/WED/06 TO SEP/FRI/06 THE L ENG HAD RECEIVED 29 PINTS WHILE THE R HAD RECEIVED 86 PINTS. HAVING NO FLT TIMES TO REF FOR OIL CONSUMPTION/FLT HR; AND THE ENG BEING ABOVE MINIMUM DISPATCH I ELECTED TO ACCEPT THE AIRPLANE. MY COMMENT/EVENT/QUESTION IS THIS: WITH MORE THAN DOUBLE CONSUMPTION ON THE R ENG OVER THE L; AND NO OIL SVC REQUEST/CONFIRMATION ENTRIES REQUIRED; AND MISSING ENTRIES ON THE BOTTOM OF THE LOGBOOK PAGE FOR OIL ADDED; HOW IS THE FLT CREW TO KNOW WHETHER CONSUMPTION IS EXCESSIVE AND IS; IN FACT; RECEIVING ALL SVCING INPUTS AND MONITORING SAME?
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.