B737-800 flight crew reported burning electrical odor in passenger cabin; resulting in an uneventful...

Attributes
ACN	1650942
Time
Date	201905
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Person 2
Function	Pilot Flying First Officer
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

While flying at FL360 approximately 45 minutes into the flight; the #1 flight attendant notified me that they were smelling some kind of electrical/plastic odor in the main cabin aft of first class and extending back to the window exits. First officer was sent back to investigate possible cause and returned to confirm that he smelled it but could not determine the source. Smoke; fumes and odor checklist was run; and the decision was made to [notify ATC] and divert to ZZZ; which was about twenty minutes away. An uneventful landing was made; though slightly overweight; and fire personnel looked over the aircraft and said that they saw no smoke or anything out of the ordinary. Aircraft was taxied to the gate and passengers deplaned.

Original NASA ASRS Text

Title: B737-800 flight crew reported burning electrical odor in passenger cabin; resulting in an uneventful divert.

Narrative: While flying at FL360 approximately 45 minutes into the flight; the #1 Flight Attendant notified me that they were smelling some kind of electrical/plastic odor in the main cabin aft of first class and extending back to the window exits. FO was sent back to investigate possible cause and returned to confirm that he smelled it but could not determine the source. Smoke; Fumes and Odor checklist was run; and the decision was made to [notify ATC] and divert to ZZZ; which was about twenty minutes away. An uneventful landing was made; though slightly overweight; and fire personnel looked over the aircraft and said that they saw no smoke or anything out of the ordinary. Aircraft was taxied to the gate and passengers deplaned.

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.