Norwegian Air will seek compensation from aircraft maker Boeing for lost revenue and extra costs stemming from the grounding of its fleet of 737 MAX 8 aircraft, the Oslo-based carrier said in a statement today.

“We expect Boeing to take this bill,” Norwegian Air said.

The airline has 18 ‘MAX’ passenger jets in its 163-aircraft fleet.

European regulators on Tuesday grounded the aircraft following Sunday’s deadly crash of a similar plane in Ethiopia killing all 157 people on board.

It is the second fatal accident involving the 737 Max 8 model in five months.

Norwegian Air cancelled at least 36 departures on Wednesday, its website showed, most of which were due to fly from airports in Oslo, Stockholm and other Nordic cities.

The company said it aimed to minimise the impact on passengers by booking them on to other flights and utilising other types of planes from its fleet to help fill the gaps.

“We are able to accommodate most intra-European passengers by these efforts but are still working on other options for our passengers travelling between Ireland and the US,” Norwegian said.

Meanwhile, the US Federal Aviation Authority (FAA) has said it will not suspend Boeing 737 Max aircraft despite mounting pressure from senators and workers’ unions.

The FAA said a review showed “no systemic performance issues” and there is no basis for grounding the aircraft.

A wave of countries and blocs have banned the plane from their airspace.

On Wednesday Hong Kong, Vietnam and New Zealand joined the list of countries that had banned 737 Max models.

The UK, China, the European Union and Australia had previously done so.

Ted Cruz, a Republican senator who chairs a subcommittee on aviation and space, said: “I believe it would be prudent for the US likewise to temporarily ground 737 Max aircraft until the FAA confirms the safety of these aircraft and their passengers.”

Democratic senators Edward Markey and Richard Blumenthal have written to the FAA – which they referred to as “our aviation safety cop on the beat” asking that the Boeing 737 Max should be grounded “until the agency can conclusively determine that the aircraft can be operated safely”.

But the FAA said that other civil aviation authorities had not “provided data to us that would warrant action”.

Boeing has confirmed that for the past few months it has been developing a “flight control software enhancement” for the aircraft, but says it is confident they are safe to fly.

Airline workers also want the FAA to ground the Boeing 737 Max.

The Association of Flight Attendants-CWA union said it is calling on the FAA “to temporarily ground the 737 MAX fleet in the US out of an abundance of caution”.

-Reuters /BBC