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Crj-700 first officer reported a momentary loss of power on both engines during descent.
| Attributes | |
| ACN | 1525569 |
| Time | |
| Date | 201803 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Regional Jet 700 ER/LR (CRJ700) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Turbine Engine |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
During descent for an ILS approach to runway xxl into ZZZ; we received a sudden and momentary loss of thrust on both engines at an altitude of approximately 7;000 feet. The air driven generator (air driver generator) deployed and emergency power only was established. Numerous warning and caution messages were posted; along with an aural alert of engine oil. Within a few seconds; normal thrust on both engines was restored and the aircraft was leveled at 6;000 feet. Airspeed was around 250 KIAS and no significant loss of airspeed was noted. I do not recall any warning or caution messages posted at that time. I began the QRH procedure for emergency power only as it was the last warning message that I remember posted on EICAS. Upon completion of the checklist; I was unable to restore full or normal AC power. Yaw damper 2 would not engage and the autopilot was unavailable. Both the pfd and mfd on the first officer's side displayed no data or information. All other systems appeared to be normal. We continued on the approach and accomplished an uneventful landing on runway xxl. The weather at the destination airport was a threat with variable ceilings between 300 to 700 AGL and reduced visibility of 3 SM with light rain.
Original NASA ASRS Text
Title: CRJ-700 First Officer reported a momentary loss of power on both engines during descent.
Narrative: During descent for an ILS approach to runway XXL into ZZZ; we received a sudden and momentary loss of thrust on both engines at an altitude of approximately 7;000 feet. The ADG (Air Driver Generator) deployed and emergency power only was established. Numerous warning and caution messages were posted; along with an aural alert of ENGINE OIL. Within a few seconds; normal thrust on both engines was restored and the aircraft was leveled at 6;000 feet. Airspeed was around 250 KIAS and no significant loss of airspeed was noted. I do not recall any warning or caution messages posted at that time. I began the QRH procedure for EMER PWR ONLY as it was the last warning message that I remember posted on EICAS. Upon completion of the checklist; I was unable to restore full or normal AC power. Yaw damper 2 would not engage and the autopilot was unavailable. Both the PFD and MFD on the first officer's side displayed no data or information. All other systems appeared to be normal. We continued on the approach and accomplished an uneventful landing on runway XXL. The weather at the destination airport was a threat with variable ceilings between 300 to 700 AGL and reduced visibility of 3 SM with light rain.
Data retrieved from NASA's ASRS site 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.