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A canadair CL65 on approach at 2500 ft executed a go around due to a flap split indication caused by a suspected flap position indicator.
| Attributes | |
| ACN | 496620 |
| Time | |
| Date | 200101 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : grb.airport |
| State Reference | WI |
| Altitude | msl single value : 2500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : grb.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument non precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : private pilot : multi engine pilot : instrument pilot : cfi pilot : commercial |
| Experience | flight time last 90 days : 120 flight time total : 1600 flight time type : 300 |
| ASRS Report | 496620 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : flap pos indication other flight crewa other flight crewb |
| Resolutory Action | flight crew : executed go around |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance Chart Or Publication |
| Primary Problem | Aircraft |
Narrative:
Over prost, I commanded the PNF to select flaps 45 degrees (airspeed was at 165 KIAS). The flaps extended from 30 degrees, the previous flap setting, to 36 degrees on the left and 37 degrees on the right and stopped. A 'flaps fail' caution was displayed on our EICAS. After following the procedures in our QRH, the flaps were re-selected to 30 degrees but there was no change in flap indicator. Landing was made uneventfully. Callback conversation with reporter revealed the following information: the reporter stated the direct cause of the flap split has not been reported by maintenance but it was believed to be the flap position indicator. The reporter said the flaps were set at 20 degrees and the airplane was maintenance ferried to a company maintenance facility.
Original NASA ASRS Text
Title: A CANADAIR CL65 ON APCH AT 2500 FT EXECUTED A GAR DUE TO A FLAP SPLIT INDICATION CAUSED BY A SUSPECTED FLAP POS INDICATOR.
Narrative: OVER PROST, I COMMANDED THE PNF TO SELECT FLAPS 45 DEGS (AIRSPD WAS AT 165 KIAS). THE FLAPS EXTENDED FROM 30 DEGS, THE PREVIOUS FLAP SETTING, TO 36 DEGS ON THE L AND 37 DEGS ON THE R AND STOPPED. A 'FLAPS FAIL' CAUTION WAS DISPLAYED ON OUR EICAS. AFTER FOLLOWING THE PROCS IN OUR QRH, THE FLAPS WERE RE-SELECTED TO 30 DEGS BUT THERE WAS NO CHANGE IN FLAP INDICATOR. LNDG WAS MADE UNEVENTFULLY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE DIRECT CAUSE OF THE FLAP SPLIT HAS NOT BEEN RPTED BY MAINT BUT IT WAS BELIEVED TO BE THE FLAP POS INDICATOR. THE RPTR SAID THE FLAPS WERE SET AT 20 DEGS AND THE AIRPLANE WAS MAINT FERRIED TO A COMPANY MAINT FACILITY.
Data retrieved from NASA's ASRS site as of July 2007 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.