B737 flight crew on approach was informed of windshear by ATC and elected to go-around. During the go; severe turbulence was encountered causing flap overspeed and an altitude deviation. The flight crew subsequently diverted to their alternate.
Synopsis
B737 flight crew on approach was informed of windshear by ATC and elected to go-around. During the go; severe turbulence was encountered causing flap overspeed and an altitude deviation. The flight crew subsequently diverted to their alternate.
Narrative
[We were on] short final 19R at MCI. Tower reported microburst and preceding flight reported windshear +/- 50 knots. Go-around was initiated quickly followed by a windshear alert in the aircraft. Tower gave me a heading of 090 and altitude of 3000 feet for the missed approach. During the turn and climb; windshear and severe turbulence were encountered. I called for flaps up during the go-around climb and cleanup. Flight instruments were difficult to read and fluctuated from 190 to 250 knots. I noticed flaps were at position 1 during the climbout. Airspeed; altitude; and flight control were difficult to maintain. I heard the Captain say we over sped the flaps so I asked him why he didn't raise the flaps to up as requested. He told me because the airspeed was varying so much and we were recovering from the windshear. (It made perfect sense to me). I had some difficulty trying to level off at 3000' and climbed to 3300' momentarily. ATC didn't seem concerned. Preceding aircraft reported windshear and hail just after touchdown. I diverted and landed at STL. Aircraft was grounded for inspection.
Second reporter narrative
We were conducting the approach to 19R at MCI. A line of weather was moving onto the airport from the west. Another B737 was on the approach in front of us. As that aircraft was on his landing roll out; I inquired about his ride on the approach. He advised he was getting a windshear indication as he was on landing rollout.About the same time; our aircraft gave us an indication that windshear was in front of us. We elected to go missed approach. Tower gave us a heading of 090 degrees and a climb to 3000 ft.As we were passing 2600 feet; we encountered severe turbulence with airspeed fluctuations of + or - 50 KIAS. The turbulence caused a flap overspeed and us to exceed our assigned altitude of 3000 ft by about 500 ft. The turbulence lasted about 15 to 20 seconds. I coordinated with Dispatch for a divert to our alternate.Upon shutdown; the aircraft was handed over to Maintenance for the required inspections and no injuries were reported to me. I could see no apparent damage to the aircraft. We swapped aircraft and continued on with our day.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.