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An EMB145 in cruise at FL370 declared an emergency and requested a lower altitude due to the left engine loss of power. Engine was commanded to idle power by the fadec unit.
| Attributes | |
| ACN | 630547 |
| Time | |
| Date | 200409 |
| Day | Thu |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 37000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 630547 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | aircraft : equipment problem dissipated controller : issued new clearance flight crew : overcame equipment problem flight crew : returned to intended or assigned course flight crew : declared emergency |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Chart Or Publication Flight Crew Human Performance Aircraft |
| Primary Problem | Aircraft |
Narrative:
During cruise flight at FL370 engine #1 partially lost power. We declared an emergency to be able to go to a lower altitude in order to be able to maintain safe airspeed. Then while descending we got power back to normal on engine #1 and stayed completely normal for the remainder of the flight to ZZZ. The emergency was canceled with ZZZ center with no further incidents. Systems operations center/maintenance operations center was contacted during the remainder of the flight and on the ground at ZZZ where it was written up to maintenance. Callback conversation with reporter revealed the following information: the reporter stated the airplane engines are equipped with full authority digital electronic engine controls. The reporter said the left engine was commanded by the fadec to idle for a few mins and then power returned. The reporter said the unit was replaced by maintenance.
Original NASA ASRS Text
Title: AN EMB145 IN CRUISE AT FL370 DECLARED AN EMER AND REQUESTED A LOWER ALT DUE TO THE L ENG LOSS OF POWER. ENGINE WAS COMMANDED TO IDLE POWER BY THE FADEC UNIT.
Narrative: DURING CRUISE FLT AT FL370 ENG #1 PARTIALLY LOST PWR. WE DECLARED AN EMER TO BE ABLE TO GO TO A LOWER ALT IN ORDER TO BE ABLE TO MAINTAIN SAFE AIRSPD. THEN WHILE DSNDING WE GOT POWER BACK TO NORMAL ON ENG #1 AND STAYED COMPLETELY NORMAL FOR THE REMAINDER OF THE FLT TO ZZZ. THE EMER WAS CANCELED WITH ZZZ CTR WITH NO FURTHER INCIDENTS. SYSTEMS OPS CTR/MAINT OPS CTR WAS CONTACTED DURING THE REMAINDER OF THE FLT AND ON THE GND AT ZZZ WHERE IT WAS WRITTEN UP TO MAINTENANCE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE AIRPLANE ENGINES ARE EQUIPPED WITH FULL AUTHORITY DIGITAL ELECTRONIC ENGINE CTLS. THE RPTR SAID THE L ENGINE WAS COMMANDED BY THE FADEC TO IDLE FOR A FEW MINS AND THEN POWER RETURNED. THE RPTR SAID THE UNIT WAS REPLACED BY MAINT.
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.