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B737 flight crew reported that during a circle to land event during gusty wind conditions they received two terrain warnings from the GPWS. A successful landing was accomplished.
| Attributes | |
| ACN | 1403190 |
| Time | |
| Date | 201611 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Type 435 |
| Person 2 | |
| Function | First Officer Pilot Flying |
| Experience | Flight Crew Total 8808 |
| Events | |
| Anomaly | Deviation - Speed All Types Inflight Event / Encounter CFTT / CFIT |
Narrative:
First officer leg. Clear skies but wind 300 23g32. Cleared ILS xr circle to land xx. Stay within 2 miles of the airport. Final speed computed as +20 knots for 167 knots which is 3 knots below the flap blow up speed of 170 knots. As per the flight manual; first officer maneuvered at 1000 feet with gear down and flaps 15 until established visually with rwy 30. Slightly high; he corrected and the speed increased to above 170 and the flaps blew up to 25. We received a 'too low terrain' call and the speed was corrected and flaps re-extended. We received another 'too low terrain' call and I saw the papis were only showing slightly low and we were clear of all terrain. After a successful landing; we could see the flaps were stuck at 28. After clearing we recycled the flaps and they operated normally. We wrote up and notified maintenance about the flaps.
Original NASA ASRS Text
Title: B737 flight crew reported that during a circle to land event during gusty wind conditions they received two terrain warnings from the GPWS. A successful landing was accomplished.
Narrative: FO leg. Clear skies but wind 300 23G32. Cleared ILS XR circle to land XX. Stay within 2 miles of the airport. Final Speed computed as +20 knots for 167 knots which is 3 knots below the Flap blow up speed of 170 knots. As per the Flight Manual; FO maneuvered at 1000 feet with Gear down and Flaps 15 until established visually with Rwy 30. Slightly high; he corrected and the speed increased to above 170 and the Flaps blew up to 25. We received a 'too low terrain' call and the speed was corrected and flaps re-extended. We received another 'too low terrain' call and I saw the PAPIs were only showing slightly low and we were clear of all terrain. After a successful landing; we could see the flaps were stuck at 28. After clearing we recycled the flaps and they operated normally. We wrote up and notified maintenance about the flaps.
Data retrieved from NASA's ASRS site 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.