Narrative:

We departed as scheduled; as normal as any other flight. On departure; the flaps were retracted on schedule and we preceded to ZZZ. At cruise; I noticed the flap indicator was showing a spit with flaps in the up position. I; then; brought it to the attention on the captain. We both noted that it did seemed strange. We had no other indications; so we continued on. As we began the arrival; and were being vectored for the visual approach to runway xxl; I began to slow; stating I was unsure about what the flaps might do. Slowing through 210 kts.; I asked for flaps 5; which was then followed by the captain stating that we had no flap movement. We asked approach to give us delayed vectors; so we could run the appropriate QRH procedure and set up for landing. I continued to fly; while the captain and I ran the QRH procedure; which lead us to a flaps up landing. Once complete and all data had been obtained; the captain talked to the flight attendants and passengers; we began our approach. I; then; transferred the controls to the captain per his request. I told ATC to have the trucks standing by; in case; we had excessive brake heating. We landed normally and exited the runway. We ran appropriate checklists and began the brake cool procedure. We held off the gate for a minimum of 30 minutes; per the brake cool information; but total of about 60 minutes to allow the brakes to cool and have maintenance inspect the gear. Airport firefighting and rescue and maintenance confirmed that we had no excessive heating and were cleared to the gate after. Arriving at the gate; we deplaned normally and transferred the aircraft the maintenance.

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Original NASA ASRS Text

Title: B737 First Officer reported that a flap asymmetry during approach resulted in a no-flap landing.

Narrative: We departed as scheduled; as normal as any other flight. On departure; the flaps were retracted on schedule and we preceded to ZZZ. At cruise; I noticed the flap indicator was showing a spit with flaps in the up position. I; then; brought it to the attention on the Captain. We both noted that it did seemed strange. We had no other indications; so we continued on. As we began the arrival; and were being vectored for the Visual Approach to Runway XXL; I began to slow; stating I was unsure about what the flaps might do. Slowing through 210 kts.; I asked for flaps 5; which was then followed by the Captain stating that we had no flap movement. We asked approach to give us delayed vectors; so we could run the appropriate QRH procedure and set up for landing. I continued to fly; while the Captain and I ran the QRH procedure; which lead us to a flaps up landing. Once complete and all data had been obtained; the Captain talked to the flight attendants and passengers; we began our approach. I; then; transferred the controls to the Captain per his request. I told ATC to have the trucks standing by; in case; we had excessive brake heating. We landed normally and exited the runway. We ran appropriate checklists and began the brake cool procedure. We held off the gate for a minimum of 30 minutes; per the brake cool information; but total of about 60 minutes to allow the brakes to cool and have Maintenance inspect the gear. Airport Firefighting and Rescue and Maintenance confirmed that we had no excessive heating and were cleared to the gate after. Arriving at the gate; we deplaned normally and transferred the aircraft the Maintenance.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.