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A crj pfd indicated a false windshear with system anomalies. The crew elected to return to departure airport.
| Attributes | |
| ACN | 644485 |
| Time | |
| Date | 200501 |
| Place | |
| Locale Reference | airport : buf.airport |
| State Reference | NY |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : buf.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 700 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 644485 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : eicas indicator |
| Resolutory Action | flight crew : landed as precaution |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
During climb out; we had windshear message on pfd; followed by pitch; roll; and heading on pfd and yaw dampener #1 fail. Captain's instruments were showing something totally opposite to what the aircraft was doing. We were climbing and the captain's pfd showed the aircraft descending. I elected; since it was nighttime and we had buffalo in sight; to turn back to the airport. I xferred control to my first officer since his instruments were fine. We advised the cabin; the station; and ran the checklist; making sure that we were not making an overweight landing; and came back without further incident. On the way to the gate; we had a couple of other unusual messages: gear unsafe; cabin pressure controller #2 inoperative. Callback conversation with reporter revealed the following information: captain stated that the aircraft did not actually enter a windshear. However; the computer predicting the windshear failed causing false pfd inputs and numerous erroneous system malfunction indications.
Original NASA ASRS Text
Title: A CRJ PFD INDICATED A FALSE WINDSHEAR WITH SYS ANOMALIES. THE CREW ELECTED TO RETURN TO DEP ARPT.
Narrative: DURING CLBOUT; WE HAD WINDSHEAR MESSAGE ON PFD; FOLLOWED BY PITCH; ROLL; AND HDG ON PFD AND YAW DAMPENER #1 FAIL. CAPT'S INSTS WERE SHOWING SOMETHING TOTALLY OPPOSITE TO WHAT THE ACFT WAS DOING. WE WERE CLBING AND THE CAPT'S PFD SHOWED THE ACFT DSNDING. I ELECTED; SINCE IT WAS NIGHTTIME AND WE HAD BUFFALO IN SIGHT; TO TURN BACK TO THE ARPT. I XFERRED CTL TO MY FO SINCE HIS INSTS WERE FINE. WE ADVISED THE CABIN; THE STATION; AND RAN THE CHKLIST; MAKING SURE THAT WE WERE NOT MAKING AN OVERWT LNDG; AND CAME BACK WITHOUT FURTHER INCIDENT. ON THE WAY TO THE GATE; WE HAD A COUPLE OF OTHER UNUSUAL MESSAGES: GEAR UNSAFE; CABIN PRESSURE CONTROLLER #2 INOP. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: CAPT STATED THAT THE ACFT DID NOT ACTUALLY ENTER A WINDSHEAR. HOWEVER; THE COMPUTER PREDICTING THE WINDSHEAR FAILED CAUSING FALSE PFD INPUTS AND NUMEROUS ERRONEOUS SYS MALFUNCTION INDICATIONS.
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.