2022-12 · NASA ASRS report 1961155
B737-800 flight crew reported aircraft control difficulty after takeoff. It was noticed that the Trailing Edge Flaps did not retract fully and were stuck. The flight crew requested priority handling and made two diversions due to weather before making a precautionary landing.
Takeoff from ZZZ with flaps 25. At approx. 400 ft. AGL; the aircraft rolled left; then immediately right. The airspeed decayed then accelerated. I noticed the airspeed was now at 210 and the flaps were still at 25. I pitched up to avoid any further overspeed and asked for flaps 5 (should have said 15). My First Officer (FO) repeated my request questioningly; or rather confused. We were now at about 600 ft. I said we need flaps moving up now! My FO astutely recognized the reason for flap retraction below 1;000 ft. and complied. FO retracted to each Gate announcing as he did so. At 1;000 ft. my FO advised; The flaps are still at 2. I said; 'Move the handle back to 5. I will maintain 210 kts. Now try 10; Now try up. The flaps did not move. They were uniformly stuck at 2. No needle split. We told ZZZ Departure we wanted to stay at 3;000 ft. for flap problem. They asked if we were requesting priority handling. YES was our response. We requested diversion to ZZZ. We began the Trailing Edge Flap Disagree QRH Checklist. Once we got weather for ZZZ; we agreed winds were too gusty and headed for ZZZ1; where winds were much less. We requested holding at ZZZ1 - ZZZZZ fix on the XXR ILS to burn fuel in order to avoid an overweight landing. Once below; we landed on XXR uneventfully.
Took off from ZZZ2 Runway XXL; Flap 25; 737-800 with gusty winds. During climb out; the flaps failed to retract from the 2 detent. Crew recognized failure; requested priority handling; requested divert to ZZZ. Upon further discussion Crew decided new divert would be ZZZ1. Captain flew aircraft on northerly vector toward airfield; and First Officer ran the Trailing Edge Flap Disagree QRH Checklist. Requested to hold at ZZZZZ intersection on XYR ILS to burn approximately 8;000 pounds of fuel. Received performance data for flaps 15 Non-Normal; Brake Cooling. Uneventfully flew approach and taxied into the Gate. Certain tragedy averted.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.
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