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An EMB145; after pushback and engine start; lost #1 engine oil due to vent line disconnected for oil servicing.
| Attributes | |
| ACN | 665062 |
| Time | |
| Date | 200507 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 665062 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 665237 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : work cards performance deficiency : scheduled maintenance |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Aircraft |
| Situations | |
| Publication | Oil Sevicing Procedure |
Narrative:
During pre-service 1 check engine #1 needed oil servicing; disconnected oil tank vent line to facilitate proper servicing; did not reconnect line. Callback conversation with reporter revealed the following information: the reporter stated the left engine; when mounted on the firewall; is tilted and when attempting to fill the oil tank to full; the vent line must be removed to prevent the oil from flowing back out. The carrier has now reportedly issued new oil servicing rules to fill the oil tank to the 2 qt below full level and the required oil servicing period from daily checks to every two days. The oil servicing procedures reportedly never addressed the oil vent line problem and most technicians serviced the tank to full per the procedures but only by disconnecting the vent line.
Original NASA ASRS Text
Title: AN EMB145; AFTER PUSHBACK AND ENG START; LOST #1 ENG OIL DUE TO VENT LINE DISCONNECTED FOR OIL SERVICING.
Narrative: DURING PRE-SERVICE 1 CHK ENG #1 NEEDED OIL SERVICING; DISCONNECTED OIL TANK VENT LINE TO FACILITATE PROPER SERVICING; DID NOT RECONNECT LINE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE L ENG; WHEN MOUNTED ON THE FIREWALL; IS TILTED AND WHEN ATTEMPTING TO FILL THE OIL TANK TO FULL; THE VENT LINE MUST BE REMOVED TO PREVENT THE OIL FROM FLOWING BACK OUT. THE CARRIER HAS NOW REPORTEDLY ISSUED NEW OIL SERVICING RULES TO FILL THE OIL TANK TO THE 2 QT BELOW FULL LEVEL AND THE REQUIRED OIL SERVICING PERIOD FROM DAILY CHKS TO EVERY TWO DAYS. THE OIL SERVICING PROCS REPORTEDLY NEVER ADDRESSED THE OIL VENT LINE PROB AND MOST TECHNICIANS SERVICED THE TANK TO FULL PER THE PROCS BUT ONLY BY DISCONNECTING THE VENT LINE.
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.