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A CRJ200 on approach selected trailing edge flaps 8 units and received a crew alerting system warning 'flaps fail.' landed flaps up uneventfully.
| Attributes | |
| ACN | 726027 |
| Time | |
| Date | 200701 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Controlling Facilities | tower : ebos.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 200 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 726027 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : crew alerting sys 'flaps fail' other flight crewa other flight crewb |
| Resolutory Action | flight crew : overcame equipment problem |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Torque tube broke. We selected flaps 8 degrees and got a flaps fail cas. We performed the QRH for flaps fail and landed without incident. No flaps when selected. QRH completed and 0 flap landing. Callback conversation with reporter revealed the following information: the first officer was flying and when the flaps were selected to 8 units and immediately the crew alerting system indicated 'flaps fail.' the QRH procedures were referenced; airplane was configured; and landed flaps up uneventfully. On the ground maintenance found a trailing edge flap drive torque tube or drive shaft broken or sheared. Maintenance also reported this is a rare type of failure.
Original NASA ASRS Text
Title: A CRJ200 ON APCH SELECTED TRAILING EDGE FLAPS 8 UNITS AND RECEIVED A CREW ALERTING SYS WARNING 'FLAPS FAIL.' LANDED FLAPS UP UNEVENTFULLY.
Narrative: TORQUE TUBE BROKE. WE SELECTED FLAPS 8 DEGS AND GOT A FLAPS FAIL CAS. WE PERFORMED THE QRH FOR FLAPS FAIL AND LANDED WITHOUT INCIDENT. NO FLAPS WHEN SELECTED. QRH COMPLETED AND 0 FLAP LNDG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE FO WAS FLYING AND WHEN THE FLAPS WERE SELECTED TO 8 UNITS AND IMMEDIATELY THE CREW ALERTING SYS INDICATED 'FLAPS FAIL.' THE QRH PROCS WERE REFED; AIRPLANE WAS CONFIGURED; AND LANDED FLAPS UP UNEVENTFULLY. ON THE GND MAINT FOUND A TRAILING EDGE FLAP DRIVE TORQUE TUBE OR DRIVE SHAFT BROKEN OR SHEARED. MAINT ALSO RPTED THIS IS A RARE TYPE OF FAILURE.
Data retrieved from NASA's ASRS site as of January 2009 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.