B737 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Total 8154; Flight Crew Type 1751
Confusion; Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Flight Crew Landed As Precaution
Aircraft; Human Factors; Weather
On approach; windshear gain 10 to 15kts reported. Tail wind at altitude. Had a difficult time slowing down was at 190 gear down at FAF. Configured to flaps 30. Stable at about 900 feet. Sometime after completion of the landing checklist had a gust up to load relief limit. But stable again by 500 feet. Inside 500 got too low terrain calls on GPWS. We were on glide path and stable; elected to continue. During this evolution the captain realized the flaps were at 25; he rechecked the flap handle position. It was at 30. Flap load relief had activated after landing checklist had been completed; but flaps remained stuck at the 25 position with the speed at 160. We elected to land; due to the severe weather; and wind shear reports in the vicinity of the airport.I was confused by the too low terrain call; we were stable on the glide path when we got this call. It did cease; but am not sure when. We never did get a too low flaps; which was my expectation. Now; I think it is due to flap handle position logic but was unable to confirm it in the book.
[Report narrative contained no additional information.]
B737 flight crew reported windshear conditions on short final caused an overspeed of the flaps.