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Flight crew of air carrier medium large transport reports abnormal running engine at cruise altitude. Diversion to alternate.
| Attributes | |
| ACN | 159472 |
| Time | |
| Date | 199010 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : pxv |
| State Reference | IN |
| Altitude | msl bound lower : 35000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute airway : j131 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 11200 flight time type : 4500 |
| ASRS Report | 159472 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 8500 flight time type : 2000 |
| ASRS Report | 159891 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : unable other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
While en route from day to dfw, encountered an engine problem. The first indications were a large throttle sep and the disconnecting of the autothrottles. The #1 throttle was about 3' aft of the #2 throttle. Advancing the #1 throttle up to the #2 throttle caused the engine EPR gauge to exceed maximum limit EPR for those flight conditions. I immediately retarded the throttle to idle. It was again advanced slowly. The EPR gauge again raced toward the limit EPR. The fuel flow this time was noticed to be about 1000 pounds-1500 pounds with the EPR at approximately 2:00. I decided that we should divert into the nearest suitable airport. I chose mem. I also declared an emergency and asked to have the fire trucks waiting for our arrival. We prepared the cockpit for an emergency approach and landing. We also advised the F/a to prepare the cabin for an emergency landing. The approach and landing were both normal. No emergency evacuate/evacuation was required and we never shut down the #1 engine. It remained at idle thrust for the remainder of the flight.
Original NASA ASRS Text
Title: FLT CREW OF ACR MLG REPORTS ABNORMAL RUNNING ENGINE AT CRUISE ALT. DIVERSION TO ALTERNATE.
Narrative: WHILE ENRTE FROM DAY TO DFW, ENCOUNTERED AN ENG PROB. THE FIRST INDICATIONS WERE A LARGE THROTTLE SEP AND THE DISCONNECTING OF THE AUTOTHROTTLES. THE #1 THROTTLE WAS ABOUT 3' AFT OF THE #2 THROTTLE. ADVANCING THE #1 THROTTLE UP TO THE #2 THROTTLE CAUSED THE ENG EPR GAUGE TO EXCEED MAX LIMIT EPR FOR THOSE FLT CONDITIONS. I IMMEDIATELY RETARDED THE THROTTLE TO IDLE. IT WAS AGAIN ADVANCED SLOWLY. THE EPR GAUGE AGAIN RACED TOWARD THE LIMIT EPR. THE FUEL FLOW THIS TIME WAS NOTICED TO BE ABOUT 1000 LBS-1500 LBS WITH THE EPR AT APPROX 2:00. I DECIDED THAT WE SHOULD DIVERT INTO THE NEAREST SUITABLE ARPT. I CHOSE MEM. I ALSO DECLARED AN EMER AND ASKED TO HAVE THE FIRE TRUCKS WAITING FOR OUR ARR. WE PREPARED THE COCKPIT FOR AN EMER APCH AND LNDG. WE ALSO ADVISED THE F/A TO PREPARE THE CABIN FOR AN EMER LNDG. THE APCH AND LNDG WERE BOTH NORMAL. NO EMER EVAC WAS REQUIRED AND WE NEVER SHUT DOWN THE #1 ENG. IT REMAINED AT IDLE THRUST FOR THE REMAINDER OF THE FLT.
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.