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A DHC8-100 departed with the aux inverter MEL'ed. Once airborne three inverter caution lights flickered indicating a potential failure. An emergency was declared followed by a return to land.
| Attributes | |
| ACN | 869338 |
| Time | |
| Date | 201001 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Dash 8-100 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb Initial Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Inverter |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Upon accepting the aircraft for flight assignment we conducted a standard preflight inspection. It was noted that the aux inverter caution light remained lit after initial power up. Crew conferred with maintenance control and it was determined that the aux inverter could be MEL'ed. Continued with preflight; push back; taxi; take off and initial climb out. During the initial climb out; while I was coming back from being off frequency to call out our times; the captain noticed and drew my attention to a potential inverter failure. All three inverter caution lights were flickering off and on; as well as the left 26 AC caution light. Upon review of the situation; captain determined it was necessary to declare an emergency and return to the field. At that point we advised ATC of our intentions and our need to declare an emergency; requesting vectors direct to the airport. Captain and I completed checklists as necessary and landed the aircraft successfully. Aircraft was met by emergency vehicles - no injuries or damages were reported. Caution lights flickered on the instrument panel which indicated a potential electrical failure; and for the safety of our passengers; crew and aircraft; the flight crew determined declaring an emergency and landing as quickly as possible was the best course of action.
Original NASA ASRS Text
Title: A DHC8-100 departed with the aux inverter MEL'ed. Once airborne three inverter caution lights flickered indicating a potential failure. An emergency was declared followed by a return to land.
Narrative: Upon accepting the aircraft for flight assignment we conducted a standard preflight inspection. It was noted that the aux inverter caution light remained lit after initial power up. Crew conferred with Maintenance Control and it was determined that the aux inverter could be MEL'ed. Continued with preflight; push back; taxi; take off and initial climb out. During the initial climb out; while I was coming back from being off frequency to call out our times; the Captain noticed and drew my attention to a potential inverter failure. All three inverter caution lights were flickering off and on; as well as the left 26 AC caution light. Upon review of the situation; Captain determined it was necessary to declare an emergency and return to the field. At that point we advised ATC of our intentions and our need to declare an emergency; requesting vectors direct to the airport. Captain and I completed checklists as necessary and landed the aircraft successfully. Aircraft was met by emergency vehicles - no injuries or damages were reported. Caution lights flickered on the instrument panel which indicated a potential electrical failure; and for the safety of our passengers; crew and aircraft; the flight crew determined declaring an emergency and landing as quickly as possible was the best course of action.
Data retrieved from NASA's ASRS site as of April 2012 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.