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Falcon 50 captain reported that a stuck reverse current relay short-circuited the entire electrical system.
| Attributes | |
| ACN | 1538644 |
| Time | |
| Date | 201804 |
| 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 | Falcon 50 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Climb |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Electrical Distribution Relay |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor Flight Crew Multiengine Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 150 Flight Crew Total 22750 Flight Crew Type 5500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
A stuck reverse current relay (rcr) on our APU caused a direct short of our entire electrical system. All three generators failed and main batteries shorted out. We were unable to fix the problem and only had a few minutes of battery so we identified as an emergency and had an uneventful landing and taxied in to the ramp. Falcon maintenance was able to fix the problem with a new rcr relay and we returned home. We had a normal flight without any problems.
Original NASA ASRS Text
Title: Falcon 50 Captain reported that a stuck Reverse Current Relay short-circuited the entire electrical system.
Narrative: A stuck Reverse Current Relay (RCR) on our APU caused a direct short of our entire electrical system. All three generators failed and main batteries shorted out. We were unable to fix the problem and only had a few minutes of battery so we identified as an emergency and had an uneventful landing and taxied in to the ramp. Falcon maintenance was able to fix the problem with a new RCR relay and we returned home. We had a normal flight without any problems.
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.