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Emb-145 captain reported experiencing stabilizer and wing anti-ice systems failures while descending in icing conditions.
| Attributes | |
| ACN | 1651439 |
| Time | |
| Date | 201906 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Aerofoil Ice System |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 211 Flight Crew Total 16720 Flight Crew Type 600 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural FAR Deviation - Speed All Types Inflight Event / Encounter Weather / Turbulence |
Narrative:
Aircraft had number 1 pack inop while descending from 11;000 feet. We passed through a layer at about 9;000 feet that caused the anti-ice to activate then we got EICAS messages stabilizer anti-icing failure and wing anti-icing failure followed by warning message icing conditions with anti-icing inop. I reduced the thrust to idle and increased my rate of descent knowing I could descend out of the icing conditions in less than 1;000 feet; but with the engines boosted due to the anti-icing; my airspeed increased to 253 knots for about 7 seconds until I could open the speed brakes and reduce the rate of descent to get my airspeed below 250. I saw the airspeed increasing and heard the aural warning high speed as I was opening the speed brakes and reduce the rate of descent. I was distracted by the warning message and let my airspeed increase. I reduced the rate of descent and opened the speed brakes. With one pack inop I should have known that if I encountered icing; that all those messages would come up and that I would not be in those conditions long enough to affect the safety of the flight. I should have watched my speed closer and increased my descent rate less.
Original NASA ASRS Text
Title: EMB-145 Captain reported experiencing stabilizer and wing anti-ice systems failures while descending in icing conditions.
Narrative: Aircraft had Number 1 pack inop while descending from 11;000 feet. We passed through a layer at about 9;000 feet that caused the anti-ice to activate then we got EICAS messages stabilizer anti-icing failure and wing anti-icing failure followed by warning message icing conditions with anti-icing inop. I reduced the thrust to idle and increased my rate of descent knowing I could descend out of the icing conditions in less than 1;000 feet; but with the engines boosted due to the anti-icing; my airspeed increased to 253 knots for about 7 seconds until I could open the speed brakes and reduce the rate of descent to get my airspeed below 250. I saw the airspeed increasing and heard the aural warning high speed as I was opening the speed brakes and reduce the rate of descent. I was distracted by the warning message and let my airspeed increase. I reduced the rate of descent and opened the speed brakes. With one pack inop I should have known that if I encountered icing; that all those messages would come up and that I would not be in those conditions long enough to affect the safety of the flight. I should have watched my speed closer and increased my descent rate less.
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.