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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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A B727-100 in cruise at FL310 shut down #2 engine due to high oil temperature caused by a fuel heat valve failed open.
| Attributes | |
| ACN | 409315 |
| Time | |
| Date | 199807 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : den |
| State Reference | CO |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv |
| Operator | common carrier : air carrier |
| Make Model Name | B727-100 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : instrument pilot : commercial pilot : flight engineer |
| Experience | flight time last 90 days : 70 flight time total : 1200 flight time type : 200 |
| ASRS Report | 409315 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
After turning on fuel heat #2 fuel heat would not close. Because fuel cools oil on this aircraft, eventually #2 oil temperature increased into the yellow band. Abnormal procedures for fuel heat valve failed open were performed. This helped somewhat but the oil temperature was still in the yellow band. As a result it was necessary to shut down the #2 engine. Training on the aircraft should include warning that failure of the fuel heat bleed air valve to close will result in the need to shut down an engine. The cure is worse than the disease in this case. Fuel heat should only be applied when the icing light is on, not every 30 mins if fuel temperature reaches zero as the manual says.
Original NASA ASRS Text
Title: A B727-100 IN CRUISE AT FL310 SHUT DOWN #2 ENG DUE TO HIGH OIL TEMP CAUSED BY A FUEL HEAT VALVE FAILED OPEN.
Narrative: AFTER TURNING ON FUEL HEAT #2 FUEL HEAT WOULD NOT CLOSE. BECAUSE FUEL COOLS OIL ON THIS ACFT, EVENTUALLY #2 OIL TEMP INCREASED INTO THE YELLOW BAND. ABNORMAL PROCS FOR FUEL HEAT VALVE FAILED OPEN WERE PERFORMED. THIS HELPED SOMEWHAT BUT THE OIL TEMP WAS STILL IN THE YELLOW BAND. AS A RESULT IT WAS NECESSARY TO SHUT DOWN THE #2 ENG. TRAINING ON THE ACFT SHOULD INCLUDE WARNING THAT FAILURE OF THE FUEL HEAT BLEED AIR VALVE TO CLOSE WILL RESULT IN THE NEED TO SHUT DOWN AN ENG. THE CURE IS WORSE THAN THE DISEASE IN THIS CASE. FUEL HEAT SHOULD ONLY BE APPLIED WHEN THE ICING LIGHT IS ON, NOT EVERY 30 MINS IF FUEL TEMP REACHES ZERO AS THE MANUAL SAYS.
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.