B737-700 flight crew reported an asymmetrical trailing edge indication leading to a go around; then a normal landing.
Synopsis
B737-700 flight crew reported an asymmetrical trailing edge indication leading to a go around; then a normal landing.
Narrative
We began to configure the aircraft for landing on Runway XXL for a visual approach. I was flying and primarily watching outside with a short scan inside. I can't remember if I called for flaps 1 or 5 first. Regardless; when I thought I had the flaps at 5; I called for the landing gear down and flaps 15 before arriving at the FAF. I then looked at the flap gauge; because the aircraft didn't feel right (felt nose high but we were bouncing around) and noticed the flaps were indicating between UP and 1. We executed a go-around. We examined the gauge and saw they were split. This was confirmed by the control inputs I was feeling. Captain ran the checklist and coordinated with Flight Attendants and Passengers. I flew and worked ATC. We completed the checklist and proceeded in to Runway XXR. Landing was uneventful. We cleared and held on Taxiway between 8 and 9 where the fire trucks met us. We coordinated for a discreet frequency to talk with them and and asked they keep an eye on the wheels for smoke/fire/abnormalities and also asked them to get a temp reading. Fire said the brakes were hot but didn't see any smoke or other indications. We re-examined the brake cooking data that we got while on downwind. We discovered an error of using manual braking and no reverses. That was changed to reflect air bulletin X as directed by the landing data and max reverse. The new brake cooling data gave us a 30 minute cool down and allowed for taxi. We slowly taxied and waited for the remaining time before arriving at the gate.
Second reporter narrative
On visual approach to XXL after initial flaps were selected; we had an asymmetrical trailing edge indication as noted on the flap gauge and a very subtle roll. I called for go around and we were boxed back around. We ran the appropriate checklist and brake cooling. I talked to the Flight Attendants and Passengers. We had an uneventful landing. We had Fire and Rescue waiting; we stopped after exiting the runway and let them visually inspect tires and brakes. Slow taxi to a spot to complete our remaining cooling time before pulling into gate. Logbook entry; talked to Maintenance and Dispatch.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.