B767 Flight Crew reported a 'burnt odor' observed by passengers and flight attendants. The Captain requested priority handling to a suitable alternate airport where a safe landing was completed with no further issues.
Synopsis
B767 Flight Crew reported a 'burnt odor' observed by passengers and flight attendants. The Captain requested priority handling to a suitable alternate airport where a safe landing was completed with no further issues.
Narrative
Just prior to reaching ZZZZZ intersection; a Flight Attendant brought me my meal and mentioned 2 aircraft anomalies. 1. The automatic seatbelt PA instructed our passengers to fasten seatbelts after turning on the seatbelt sign.2. Passenger screens aft of 'door 3' had all gone blank. (I believe they meant aft of the emergency doors).While in the process of being transferred from ZZZZ Controllers to ZZZZ1; the Captain received the message that smoke or a burnt odor was smelled by passengers and Flight Attendants in the cabin near row 19. The Relief Pilot returned to the flight deck about this time. The Smoke; Fire; Fumes immediate action items and QRC were run and the Captain [requested priority handling]. We diverted for ZZZZ and I was assigned control of the airplane and radios with instructions to get us to the airport. I flew the aircraft while the Relief Pilot and Captain completed QRH procedures. We remained clear of all oceanic tracks and communicated with ZZZZ Center. We completed non normal QRH procedures and performed all tasks associated with the descent but I do not recall returning to a normal descent checklist. Prior to the approach; the Captain assumed Pilot Flying duties again and landed the aircraft in ZZZZ. At a gate; The odor was confirmed by others. One passenger identified himself as a former avionics technician and said he definitely smelled a burnt electrical odor upon boarding the flight hours earlier in ZZZ. I never noticed the reported odors.
Second reporter narrative
Woke up at XA:50 due to Purser announcement about serious safety threat and Entertainment system being reset. Was approached by Purser; at the request of Captain; to walk down the length of fuselage to see if I would smell anything like smoke. While walking down the aisle to the back of the aircraft I did not smell anything. When I got to the end of the aircraft; I inquired Flight Attendants to see what had happened. Was told that several passengers had reported smelling smoke and when Flight Attendants went back to check these reports; they could only smell faint smell of burning hair around row 19 and aft. At this point I was advised to return to the cockpit as we were diverting to ZZZZ.Once in the cockpit; I was quickly briefed on the situation and saw that we were on our way to ZZZZ. Assisted CA (Captain) and FO (First Officer) in their duties to get the airplane ready for landing in ZZZZ. Landing was uneventful and after inspection by the local fire department we were able to taxi to the gate.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.