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An EMB120 flight crew returns to fwa after an oil pressure problem and resulting in-flight engine shutdown.
| Attributes | |
| ACN | 402834 |
| Time | |
| Date | 199805 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : fwa |
| State Reference | IN |
| Altitude | msl bound lower : 7000 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau |
| Operator | common carrier : air carrier |
| Make Model Name | Xingu EMB-121 All Series |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude other other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 260 flight time total : 9500 flight time type : 6000 |
| ASRS Report | 402834 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
While climbing through approximately 7000 ft, we encountered a low oil aural warning for the #2 engine. Confirmed low oil pressure with gauges. Refereed to checklist. Brought #2 power lever to flight idle, engine oil pressure continued oscillating between 30-50 pounds psi -- never getting oil pressure to stabilize between 40-55 pounds psi. The crew shut down #2 engine by following the precautionary engine shutdown checklist. Callback conversation with reporter revealed the following information: after the return to fwa the aircraft, an EMB120, was inspected by contract maintenance since this was an off line maintenance station. The mechanic had a difficult time in finding the cause of the oil loss, a chafed oil line in the #2 engine. The area was very difficult to get to and this may have been one of the reasons the chafing was not discovered on other maintenance checks. The reporter stated that he had not had any problems like this one in the past.
Original NASA ASRS Text
Title: AN EMB120 FLC RETURNS TO FWA AFTER AN OIL PRESSURE PROB AND RESULTING INFLT ENG SHUTDOWN.
Narrative: WHILE CLBING THROUGH APPROX 7000 FT, WE ENCOUNTERED A LOW OIL AURAL WARNING FOR THE #2 ENG. CONFIRMED LOW OIL PRESSURE WITH GAUGES. REFEREED TO CHKLIST. BROUGHT #2 PWR LEVER TO FLT IDLE, ENG OIL PRESSURE CONTINUED OSCILLATING BTWN 30-50 LBS PSI -- NEVER GETTING OIL PRESSURE TO STABILIZE BTWN 40-55 LBS PSI. THE CREW SHUT DOWN #2 ENG BY FOLLOWING THE PRECAUTIONARY ENG SHUTDOWN CHKLIST. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: AFTER THE RETURN TO FWA THE ACFT, AN EMB120, WAS INSPECTED BY CONTRACT MAINT SINCE THIS WAS AN OFF LINE MAINT STATION. THE MECH HAD A DIFFICULT TIME IN FINDING THE CAUSE OF THE OIL LOSS, A CHAFED OIL LINE IN THE #2 ENG. THE AREA WAS VERY DIFFICULT TO GET TO AND THIS MAY HAVE BEEN ONE OF THE REASONS THE CHAFING WAS NOT DISCOVERED ON OTHER MAINT CHKS. THE RPTR STATED THAT HE HAD NOT HAD ANY PROBS LIKE THIS ONE IN THE PAST.
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.