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A DHC8-400's egpws 'too low flap' warning sounded on short final because the flap configuration switch was set at 15 when a flaps 35 landing was in progress. The crew executed a go-around in order to troubleshoot the warning's cause.
| Attributes | |
| ACN | 840009 |
| Time | |
| Date | 200906 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Q400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Other Go Around |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | GPWS |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Person 2 | |
| Function | First Officer Pilot Flying |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy |
Narrative:
At approx 500 ft AGL the 'too low flap' warning sounded. Checked flap configuration and flaps were set at selected 35. Again warning sounded and a go-around was executed. Later; on the missed approach it was discovered that the GPWS landing flap was set at 15 vs 35. The first officer was flying pilot. Condition was corrected and flight arrived normally approximately 15 minutes later. First officer had been having difficulty operating the FMS and afcs. I believe during a time of assisting him with these units I became distracted during the decent checklist and failed to insure the GPWS landing flap selector was in the correct position for flaps 35 landing. I should have gone back and restarted the checklist from the beginning after the checklist was interrupted. I most likely got interrupted at that point in the checklist and when I returned to the checklist missed the GPWS landing flap selector setting.
Original NASA ASRS Text
Title: A DHC8-400's EGPWS 'TOO LOW FLAP' warning sounded on short final because the flap configuration switch was set at 15 when a Flaps 35 landing was in progress. The crew executed a go-around in order to troubleshoot the warning's cause.
Narrative: At approx 500 FT AGL the 'Too Low Flap' warning sounded. Checked flap configuration and flaps were set at selected 35. Again warning sounded and a go-around was executed. Later; on the missed approach it was discovered that the GPWS landing flap was set at 15 vs 35. The First Officer was flying pilot. Condition was corrected and flight arrived normally approximately 15 minutes later. First Officer had been having difficulty operating the FMS and AFCS. I believe during a time of assisting him with these units I became distracted during the Decent Checklist and failed to insure the GPWS landing flap selector was in the correct position for Flaps 35 landing. I should have gone back and restarted the checklist from the beginning after the checklist was interrupted. I most likely got interrupted at that point in the checklist and when I returned to the checklist missed the GPWS landing flap selector setting.
Data retrieved from NASA's ASRS site as of April 2012 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.