“I am an ex-dispatcher and you cannot dispatch an aircraft when there is a mismatch between the [passengers] on board and the baggage count,” the commenter said. “It will, without doubt, be the subject of an internal inquiry.” FlightRadar24.com shows the path of the flightCredit:FlightRadar24.com In 1985, Air India Flight 182 crashed off the coast of Ireland en route from Toronto to Sahar International in India after a bomb placed in the cargo hold by Sikh extremists Babbar Khalsa exploded over the Atlantic.The passenger responsible is believed to be ‘M Singh’ who checked himself onto the flight – along with a suitcase – but did not board. A transatlantic flight from London to Boston was forced to divert to Dublin when the crew realised there was a piece of unaccompanied luggage in the hold.Norwegian Flight DY-7147 was 38,000 feet above the Atlantic off the west coast of Ireland with as many as 344 people on board when the Boeing 787 Dreamliner turned back towards the UK before navigating its way to the Irish capital, where it landed 55 minutes later.The crew reported that a piece of luggage had travelled without a passenger, creating a potential security issue.Norwegian has not responded for a request for comment but a spokesperson told the Irish Times the aircraft had been diverted to Dublin “to offload a piece of luggage”, adding: “The passenger whom the luggage belonged to was not on board the aircraft, which is why this security measure was taken. We’re sorry about the inconvenience caused to the passengers.”Data from FlightRadar24.com shows how the aircraft rose to cruising altitude before turning around twice and heading to Dublin. Other commenters say that the Norwegian aircraft should never have left the gate.One person believed to be on the flight posted on Twitter: “Thank you for not accounting for all bags and turning round for an emergency stop in Dublin #pleasegetmehome.” The plane remained at Dublin for about an hour and a half before it continued to Boston and landed nearly three hours late.A commenter on the website AVHerald, which reported on the incident, said there was “no excuse” for such a situation.