Date: 202006
Local time of day: 0601-1200
Location: ZZZ.Airport, US
Aircraft: Commercial Fixed Wing
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Cruise
Reporter organization: Air Carrier
Reporter function: Flight Attendant (On Duty)
Reporter qualification: Flight Attendant Current
Second reporter function: Flight Attendant (On Duty)
Anomaly: Deviation / Discrepancy - Procedural FAR; Flight Deck / Cabin / Aircraft Event Passenger Misconduct
Detector: Person Flight Attendant
When detected: In-flight
Result: Flight Crew FLC complied w / Automation / Advisory
Contributing factors: Environment - Non Weather Related; Human Factors
Primary problem: Human Factors

Narrative: Passenger in Seat XX I asked to put his seatbelt on and please put his mouth covering back on when doing compliance. When in the air the pilots took the seatbelt light off and made to PA. The passenger got up and went to the bathroom in the back of the plane FA-A went to check on first class and when I was up front the pilots called and asked if there was someone smoking in the bathroom. FA-B was on the phone and the passenger had just came out of the bathroom and FA-B ask if he was smoking and he said he was vaping. And there was not fire in the bathroom FA-B checked The bathroom thoroughly. FA-B is talked to the passenger. Pilots called and asked the FAs to tell the passengers to stay on the plane so the Captain can talk to him FA-B told the passengers and also to keep his mask on. Later the man sitting [in Seat XY] came to the back and told FAs that the passenger in XX was not wearing his mask so FA-B took one of the blue masks and gave it to him. The passenger in XX Remain seated when deplaning the captain went and spoke with him.Recommend no vaping placards in the restrooms.


Second narrative: While in the air passenger in Seat XX went to the lavatory in the aft lavatory. While in the lavatory I was in the aft galley and heard the alarm go off. I was about to knock on the door when he stepped out of the lavatory where I stopped him. I asked him if he was smoking on the plane which he responded that he had; I had told him that it was a $XX;000 fine and a federal offense; I asked him if it was a vape and he replied that it was. When the Captain called and had asked what happened. I told him that the passenger had smoked/vaped and that he was being compliant and honest. The passenger went to his seat and I checked the bathroom to make sure there was no cigarette or anything in the trash and toilet. The bathroom didn't smell so I have reason to believe it was a vape. The Captain called again and told me that he wanted to speak to the passenger after the flight; so I went up to him to his seat and told him after the flight was done he needed to stay on board so the Captain could speak to him. I had to also remind him he needed to wear his mask while during flight. FA A had told him before he needed to wear his mask as well. During the flight after the situation a passenger came to me and FA A and told us that he wasn't wearing his mask so I got one of our masks and went up to him and politely asked that he wear his mask during the whole flight and if his kept falling down I will provide him with one and handed it to him. After all passengers deplaned he stayed on board and the CA talked to him.Maybe in the lavatory have it say no smoking/vaping. And maybe add to safety card and the consequences of what could happen if you do.


Synopsis: Air carrier flight attendants reported that a passenger was vaping in the lavatory and was not wearing a personal protective mask during the flight.