The pilots of a JetBlue flight from Boston to Dublin reported a fight on board shortly after take-off on Monday evening, 19 October. According to the radio calls described by aviation site AirLive, passengers came to blows near the lavatories while the aircraft was still climbing, and several passengers then asked for the flight to return to Boston1. The crew carried on: ADS-B data shows the Airbus A321neo crossed the Atlantic without a detour and landed in Dublin on Tuesday morning2.

A fistfight near the lavatories

The flight was B6 3531, operating under the callsign JBU3532. AirLive reports that the pilots told air traffic control there was a fistfight near the lavatory. According to the site, the initial calls also made clear that several passengers had safety concerns and explicitly asked for the aircraft to turn around so they could get off in Boston1. The flight crew decided to continue the crossing1.

What the ADS-B data shows

The FAA aircraft registry lists N2199J as an Airbus A321-271NX built in 2025 and registered to JetBlue Airways since March 20263. ADS-B data from adsb.lol shows it took off from Boston Logan at 21:10 local time (01:10 UTC) and climbed north-east along the coast of Massachusetts and Maine, first to about 29,000 feet and later to 35,000 feet2.

There is no turn back towards Boston and no diversion in the data, and the transponder did not squawk an emergency code. The aircraft touched down in Dublin on Tuesday 20 October at 07:26 Irish time (06:26 UTC) and came to a stop at around 07:35, after just over five hours in the air2. A few hours later the same aircraft left again for Boston as JBU3542.

Continue or turn back

The pilot in command is directly responsible for, and the final authority on, the operation of the aircraft4. ICAO points out that diverting a flight to disembark a passenger or hand them over to police is costly for everyone involved5. If the captain returns to the country of departure, police there can deal with the passenger straight away. If the flight continues to another country, it was long unclear what police at the destination were allowed to do5.

Towards air traffic control, the standard order applies: state the nature of the problem, the crew's intentions and the assistance required. A distress call starts with MAYDAY, an urgency call with PAN-PAN6. The FAA tells pilots not to hesitate: anyone who becomes apprehensive for their safety for any reason should request assistance immediately4.

A recent Delta Connection case shows what a captain's authority means when a conflict arises in the cabin.

What the Tokyo Convention allows the captain to do

The 1963 Tokyo Convention gives the aircraft commander specific powers on international flights. With reasonable grounds to believe that someone is endangering safety or good order on board, the captain may impose reasonable measures, including restraint. Other crew members can be required to help, while passengers can be asked but not required to assist7. If possible before landing, the captain must tell the authorities of the destination state that a person is under restraint and why. For what the captain considers a serious offence, the suspect can be handed over to the competent authorities7. Crew and passengers acting under the convention cannot be held responsible in any proceedings for how the person was treated7.

The weak point was that jurisdiction under the convention rested mainly with the state of registration of the aircraft5. The Montreal Protocol of 2014 therefore requires states parties to establish jurisdiction as the state of landing and as the state of the operator as well. It entered into force on 1 January 2020 and had 58 states parties in February 20265. Irish police do act on inbound flights: in June 2025 the captain of a United flight from Newark to Dublin asked for Garda assistance with a disruptive passenger, who was arrested and charged with assault and offences under Ireland's Air Navigation and Transport Act 20228.

Zero tolerance in the United States

The FAA has a zero-tolerance policy on unruly passengers. It can propose fines of up to $43,658 per violation, one incident can lead to several fines, and cases are referred to the FBI for possible criminal prosecution when warranted9. US airline rules explicitly prohibit anyone from assaulting, threatening, intimidating or interfering with a crewmember10.

Up to 19 October, the FAA had received 1,400 unruly passenger reports this year. It opened 90 investigations and 82 enforcement actions, with $1.6 million in fines11. In the record year of 2021 there were 5,973 reports, and in 2025 there were 1,62111. For another recent case, read about the passenger who was restrained with duct tape on American Airlines AA618.

Interested in the airline? See the JetBlue airline profile and what JetBlue pilots earn, or read how to become a captain.