AirIndia tweeted about the changes in fight schedule. (File photo)
Travel plans for thousands of passengers, including those travelling to India, were disrupted after airlines cancelled or cut short the duration of many flights to and from the United States over aviation industry fears that 5G technology could interfere with crucial navigation instruments.
Several international airlines, including Air India, have announced that they will cancel flights to the US from Wednesday.
The US aviation regulator Federal Aviation Administration (FAA) on January 14 said that "5G interference with the aircraft's radio altimeter could prevent engine and braking systems from transitioning to landing mode, which could prevent an aircraft from stopping on the runway".
Altimeter measures the height of the aircraft above the ground. The band on which altimeter works is close to that on which the 5G system works. American telecom companies paid the US government USD 81 billion in 2021 for the right to use those frequencies, known as the C-Band.
The C-band service, which offers faster speeds and broader coverage, was due to be turned on from Wednesday. The frequency issue appeared to impact the popular Boeing 777, a long-range and wide-body aircraft.
Air India tweeted on Tuesday that due to deployment of 5G communications in the US, "our operations to the USA from India stand curtailed/revised with change in aircraft type from January 19, 2022." Air India stated on Twitter that it won't be operate eight India-US flights on Wednesday "due to deployment of the 5G communications in the US".
These eight Air India flights were: Delhi-New York, New York-Delhi, Delhi-Chicago, Chicago-Delhi, Delhi- San Francisco, San Francisco-Delhi, Delhi-Newark and Newark-Delhi.
Three carriers -- American Airlines, Delta Airlines and Air India -- currently operate direct flights between India and the US.
Apart from Air India, several other airlines announced they were cancelling flights into the US over the issue of deployment of the 5G service.
Emirates said that due to "operational concerns" associated with the planned deployment of 5G mobile network services in the US at certain airports, it will be suspending flights from January 19 until further notice to Boston, Chicago, Dallas Fort Worth, Houston, Miami, Newark, Orlando, San Francisco and Seattle.
Delta said that telecom companies agreed Tuesday to limit the scope of Wednesday's planned 5G deployment and will delay implementation around certain U.S. airports. "While this is a positive development toward preventing widespread disruptions to flight operations, some flight restrictions may remain," Delta said it has joined other airlines in seeking a delay by the US government of the deployment of the new 5G coverage into the C-band spectrum until more protections and assurances against potential interference with aircraft radio altimeters exist.
The airline said the impact on air travel could be immediate and significant, directly impacting passenger travel and cargo shipping.
"The nation's commerce will grind to a halt," the CEOs of major carriers, including Delta CEO Ed Bastian, wrote in a letter coordinated by Airlines for America to government officials, including Transportation Secretary Pete Buttigieg and the chair of the Federal Communications Commission.
The sudden flight cancellations disrupted travel plans for thousands of passengers who were left in the lurch with little information forthcoming on when the flights will resume.
Jayant Raj had his suitcases packed and was ready to board the Air India flight from New York's JFK International Airport to New Delhi on Wednesday which now stands cancelled. He said he first got to know about the flight cancellation Tuesday afternoon through a tweet by Air India.
"I was travelling to India after four years and was counting days to meet my parents and family. First, the COVID pandemic curtailed travel for almost two years and now there is this new issue," he said. "Travelling has now become very nerve-racking and taxing." With uncertainty over when the flight from JFK to Delhi will resume, Raj decided to take the Air India flight from Washington, which is still operational and departs Wednesday morning.
"I will travel to Washington from New York by train and try and see if I can get a ticket on the flight. This last-minute cancellation and disruption is stressful but I have to take a chance. If I am able to get a seat on the flight, this hassle of additional 5-hour overnight travel to Washington will be worth it," he said.
Priyanka Seth, another passenger whose flight got cancelled due to the 5G issue, said she was travelling to Mumbai and was eager to meet her parents after nearly five years.
"The pandemic as it is has made travel very stressful. Additional problems caused by such last-minute cancellations are leaving so many people in the lurch," Seth said.
Seth said she is looking for other flight options to Mumbai but purchasing a ticket is not the only hurdle.
Seth, who has two young children, was travelling alone and said she can only imagine the difficulty it must be for parents travelling with young kids or for the elderly travelling alone amid such travel disruptions and uncertainty.
New York-based social activist Prem Bhandari said while the local staff of Air India at JFK and Newark airports have been very helpful and have done a "commendable job during this pandemic", but the airline management could have managed the current situation caused by the 5G issue in a more effective way.
"I know of people who have travelled by road/air to get a connection from Delhi to New York. Passengers waited for over two hours at the airport before being told that the flight was cancelled. They should have been informed on time. It is not possible that the flight was cancelled at the last minute," he said, adding that the airlines would have known that there could be disruptions and should have notified passengers well in advance.
"I am inundated with calls from people who are inquiring when the flights will resume. Those travelling on the 19th of January are now stranded. Others travelling in the coming days and weeks are worried by the uncertainty caused by the suspension of the flights," Bhandari, who is also Chairman of REDIO - Rescuing every Distressed Indian Overseas, said.
US mobile networks AT&T and Verizon have agreed to postpone the rollout of their new 5G service at some airports, according to US media reports.
"We are frustrated by the FAA's inability to do what nearly 40 countries have done, which is to safely deploy 5G technology without disrupting aviation services, and we urge it do so in a timely manner," CNN quoted Megan Ketterer, a spokesperson for AT&T, as saying.
The Biden administration welcomed the delay, saying that the "agreement will avoid potentially devastating disruptions to passenger travel, cargo operations, and our economic recovery while allowing more than 90 per cent of wireless tower deployment to occur as scheduled."
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)