B757 flight crew reported a Trailing Edge Flap Asymmetry Caution during approach; conducting a go around; and landing after completing the QRH Procedures.
Synopsis
B757 flight crew reported a Trailing Edge Flap Asymmetry Caution during approach; conducting a go around; and landing after completing the QRH Procedures.
Narrative
During final configuration for landing on visual approach Runway XXR at ZZZ; selected gear down; flaps 20 degrees and got a Master Caution Alert; TE FLAP DISAGREE EICAS (Engine Indicating and Crew Alerting System) message and TRAILING EDGE light. The left and right flaps both indicated 5 degrees on the flap indicator gauge; the flap handle was in the 20 degree position; and the flap handle was firmly in the 20 degree detent. FO (First Officer) was Pilot Flying and CA (Captain) was the Pilot Monitoring during configuration and glide slope intercept. CA took the airplane; flew GS down to 1;000 feet and initiated missed approach climbing straight ahead to 3;000 feet. We retracted the gear; left the flap handle in its position; accelerated to 180 knots and asked for vectors for extended final to Runway XXR while we ran our checklist for a configuration problem. CA continued as PF and took the radios on downwind as FO worked QRH procedures. Fuel on board at this point was 7;400 lbs. QRH procedures directed a Vref 30+30 landing with existing flaps of 5 degrees. The Max Manual braking landing distance was approximately 3;900 feet; and Max AUTO BRAKES distance was approximately 7;100 feet. We requested priority handling for abnormal configuration and traffic priority and were directed to plan for Runway XXC. At that time; we stated souls on board and one hour and fifteen minutes of fuel remaining; later on final approach we reported 6;900 pounds of fuel remaining to ATC. We landed uneventfully on Runway XXC and exited right at Taxiway 1; turned right onto Taxiway 2 and stopped to have emergency ground vehicles check for hot brakes; FOD or leaks. Emergency response vehicles reported no hot brakes; FOD or leaks; and our Brake Monitoring Temperature Sensor (BTMS) display showed all zeros at that time. We elected to terminate the priority request and taxi to the gate. We taxied 2; 3; 4 to hold short Runway XY. Then crossed to ramp entry and on to abeam Gate X for shutdown and tow in to Gate Y. The highest brake temperatures after block in to the gate were '2's on the BTMS. We were met by Fire Department and Maintenance at the gate; debriefed each on the flight deck. Also submitted AML (Aircraft Maintenance Logbook) write up in the App on the flight deck; but apparently it was 'pending' and didn't fully submit until a few minutes later inside the OPS. Called Duty Officer and Dispatch immediately once inside OPS. Referenced FOM and completed [safety report].
Second reporter narrative
C3 Senior informed me that Aircraft X requested priority handling while on the arrival into ZZZ due to trailing edge flap issue. Crash; Fire and Rescue were called out but not required.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.