B767 flight crew reported a flap malfunction on final approach.
Synopsis
B767 flight crew reported a flap malfunction on final approach.
Narrative
On final approach ILS XXL; while extending the flaps the Engine Indicating and Crew Alerting System (EICAS) message displayed as well as the flap diagram indicating an asymmetric flap condition. The left flap indicated past 15 degrees and the right indicated below 15 degrees. The Captain initiated a go-around and directed me to [request priority handling]; I coordinated our go-around and intentions and the Captain (CA) transferred aircraft control. I flew the aircraft and continued radio coordination with ATC through holding; while the CA and International Relief Officer ran the checklist. The CA called Dispatch; Maintenance and informed the flight attendants with briefing information. I coordinated our exit from holding and approach clearance and transferred aircraft control back to the CA. The CA flew an uneventful approach and landing. Priority vehicles were standing by; and followed us to parking. We shut down with the flaps in their abnormal position. See attached photo of EICAS after shutdown.
Second reporter narrative
While configuring to land at 3000 ft. we received a TE FLAP ASYM EICAS message when the flaps were between 5 and 10. The Captain divided the flight deck duties. First Officer (FO) fly the aircraft and ATC radios; relief pilot backup the Captain with the abnormal checklist. We [requested handling priority]; went into holding; contacted Dispatch and Maintenance; then issued briefing information to the flight attendants before making an announcement to the passengers. We left the hold via vectors and executed the ILS XXL into ZZZZ1 landing without event.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.