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A CRJ200 nose gear retracted at the gate with both engines running after the captain powered the aircraft down and selected the battery switch off in order to reset APU and main battery charger EICAS alerts.
| Attributes | |
| ACN | 1125363 |
| Time | |
| Date | 201310 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Regional Jet 200 ER/LR (CRJ200) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Gear Extend/Retract Mechanism |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy |
Narrative:
At the ramp 'APU battery charger' and 'main battery charger' status messages illuminated. Engines are started; parking brake is still on. I planned to power down briefly. As we do normal power down every time we shut down the aircraft; I turned off all AC generators first and all the indication was normal except the above messages. Upon turning off the main battery switch; the nose gear retracted all of sudden; without any warning or message. Both of the main gears were not retracted and showing the green indications. I asked the ramp agent to bring up boarding stair and deplaned the passengers normally.I did not expect the nose gear retraction upon turning off AC power and the main battery switch. I did not expect any threat as the parking brake was not even released.
Original NASA ASRS Text
Title: A CRJ200 nose gear retracted at the gate with both engines running after the Captain powered the aircraft down and selected the Battery Switch OFF in order to reset APU and Main Battery Charger EICAS alerts.
Narrative: At the ramp 'APU Battery Charger' and 'Main Battery Charger' status messages illuminated. Engines are started; parking brake is still on. I planned to power down briefly. As we do normal power down every time we shut down the aircraft; I turned off all AC generators first and all the indication was normal except the above messages. Upon turning off the Main Battery switch; the nose gear retracted all of sudden; without any warning or message. Both of the main gears were not retracted and showing the green indications. I asked the Ramp Agent to bring up boarding stair and deplaned the passengers normally.I did not expect the nose gear retraction upon turning off AC power and the Main Battery Switch. I did not expect any threat as the parking brake was not even released.
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.