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An EMB170 had multiple electrical anomalies in cruise flight. The crew diverted to a suitable alternate airport.
| Attributes | |
| ACN | 1031778 |
| Time | |
| Date | 201208 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 170/175 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Component | |
| Aircraft Component | AC Generation Indicating and Warning System |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
During cruise we noticed an initial EICAS message fuel feed one fault followed shortly thereafter by an spda fault cyan message. We ran the QRH for the messages and while looking through the mfd synoptic pages noticed we had a transient activation of both AC fuel pumps while both ejector pumps showed off and on intermittently. While scanning the other synoptic pages we; noticed a loss of data for the buss tie contactors as well as AC bus 2; dc bus 2; and tru 2; along with the intermittent APU start bus data loss; all illustrated by yellow dashed lines. Also; both engine bleeds; both fcv's and both recirc fans showed off. During this time we lost control of the aft cabin and cockpit temperatures and it became very warm in the cockpit and cabin. After discussing the compound failures with maintenance control and dispatch; we elected to divert and land flaps full because we would not have reversers per the QRH. The landing was uneventful with normal braking and nose wheel steering. After landing; the EICAS displayed engine 1; 2 no dispatch and crg fire prot fault. The aircraft accepted ground power and we were able to shut the engines at the gate.
Original NASA ASRS Text
Title: An EMB170 had multiple electrical anomalies in cruise flight. The Crew diverted to a suitable alternate airport.
Narrative: During cruise we noticed an initial EICAS message fuel feed one fault followed shortly thereafter by an SPDA fault cyan message. We ran the QRH for the messages and while looking through the MFD synoptic pages noticed we had a transient activation of both AC fuel pumps while both ejector pumps showed off and on intermittently. While scanning the other synoptic pages we; noticed a loss of data for the buss tie contactors as well as AC bus 2; DC bus 2; and TRU 2; along with the intermittent APU start bus data loss; all illustrated by yellow dashed lines. Also; both engine bleeds; both FCV's and both Recirc fans showed off. During this time we lost control of the aft cabin and cockpit temperatures and it became very warm in the cockpit and cabin. After discussing the compound failures with Maintenance Control and Dispatch; we elected to divert and land flaps full because we would not have reversers per the QRH. The landing was uneventful with normal braking and nose wheel steering. After landing; the EICAS displayed ENG 1; 2 NO DISPATCH and CRG FIRE PROT FAULT. The aircraft accepted ground power and we were able to shut the engines at the gate.
Data retrieved from NASA's ASRS site as of July 2013 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.