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A B757-200 flight crew experienced loss of thrust on takeoff roll. After takeoff the thrust loss became more apparent; and they declared an emergency and returned to their departure airport.
| Attributes | |
| ACN | 805463 |
| Time | |
| Date | 200809 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Environment | |
| Weather Elements | Fog |
| Light | Dawn |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 805463 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency flight crew : landed as precaution |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Picked up aircraft and reviewed logbook. Noticed previous write-up for an engine partial power loss on climb out from 2 days previous. During takeoff roll; noticed a good static run-up. As airspeed passed through 110 KTS; began to notice a slow pull to the left and a slow drop off in left engine. Elected to continue takeoff due to airspeed. Manually pushed left throttle up to equalize all other power settings. As we climbed; EPR discrepancy became worse. Aircraft flew normally if EPR indications were not used to set power. Declared an emergency and returned to the airport for an overweight landing. Entire flight was short; sweet; and mostly a non-event return to the field.
Original NASA ASRS Text
Title: A B757-200 FLT CREW EXPERIENCED LOSS OF THRUST ON TKOF ROLL. AFTER TKOF THE THRUST LOSS BECAME MORE APPARENT; AND THEY DECLARED AN EMER AND RETURNED TO THEIR DEP ARPT.
Narrative: PICKED UP ACFT AND REVIEWED LOGBOOK. NOTICED PREVIOUS WRITE-UP FOR AN ENG PARTIAL PWR LOSS ON CLBOUT FROM 2 DAYS PREVIOUS. DURING TKOF ROLL; NOTICED A GOOD STATIC RUN-UP. AS AIRSPD PASSED THROUGH 110 KTS; BEGAN TO NOTICE A SLOW PULL TO THE L AND A SLOW DROP OFF IN L ENG. ELECTED TO CONTINUE TKOF DUE TO AIRSPD. MANUALLY PUSHED L THROTTLE UP TO EQUALIZE ALL OTHER PWR SETTINGS. AS WE CLBED; EPR DISCREPANCY BECAME WORSE. ACFT FLEW NORMALLY IF EPR INDICATIONS WERE NOT USED TO SET PWR. DECLARED AN EMER AND RETURNED TO THE ARPT FOR AN OVERWT LNDG. ENTIRE FLT WAS SHORT; SWEET; AND MOSTLY A NON-EVENT RETURN TO THE FIELD.
Data retrieved from NASA's ASRS site as of May 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.