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Crj-200 flight crew experiences loss of AC power to the essential bus. Declare emergency and return to departure airport.
| Attributes | |
| ACN | 790265 |
| Time | |
| Date | 200806 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl bound lower : 7500 msl bound upper : 14000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 200 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 790265 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : eicas elec system warning |
| Resolutory Action | flight crew : declared emergency other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
We had just gone through 7500 ft and were cleared up to 14000 ft and told to contact ZTL when the aircraft ess yellow message displayed. We completed the QRH and the bus would not connect to the alternate source -- bus 2. It would connect then disconnect; then connect; then disconnect. We spoke to company; declared an emergency; and returned to ZZZ.
Original NASA ASRS Text
Title: CRJ-200 FLT CREW EXPERIENCES LOSS OF AC POWER TO THE ESSENTIAL BUS. DECLARE EMERGENCY AND RETURN TO DEP ARPT.
Narrative: WE HAD JUST GONE THROUGH 7500 FT AND WERE CLRED UP TO 14000 FT AND TOLD TO CONTACT ZTL WHEN THE ACFT ESS YELLOW MESSAGE DISPLAYED. WE COMPLETED THE QRH AND THE BUS WOULD NOT CONNECT TO THE ALTERNATE SOURCE -- BUS 2. IT WOULD CONNECT THEN DISCONNECT; THEN CONNECT; THEN DISCONNECT. WE SPOKE TO COMPANY; DECLARED AN EMER; AND RETURNED TO ZZZ.
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.