If missing Malaysia Airlines Flight MH370 is ever found it will bring a host of new questions: Will they find the black box, how much will it reveal and who will pay for it all? 

Major questions will be asked if searchers manage to track down the remains of missing jet Malaysia Flight MH370 which vanished two years ago. 

The Boeing 777-200ER took off from Kuala Lumpar airport in Malaysia on a routine flight to Beijing in China on March 8, 2014 with 239 passengers on crew aboard. 

What happened next has produced one of the greatest aviation mysteries in recent history with the disappearance of a state-of-the-art passenger jet. 

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Martin Dolan, chief commissioner of the Australian Transport Safety Bureau, who is organising the search for the missing jet said funds were still available to continue the mission to find the doomed Boeing-777

So far £88 million has been spent on trying to find the missing aircraft with 43,600 miles of seabed searched 

Families of the 239 passengers and crew on board the aircraft  want the search to continue to find answers 

So far the search for the missing jet has cost £88 million, with 46,300 square miles of seabed surveyed without success. 

The only confirmed piece of debris recovered from the jet washed up on Reunion Island, off the coast of Madagascar in July, thousands of miles away from the current search zone.

A further piece of potential wreckage was found this week on a Mozambique beach by American Blaine Alan Gibson. The one metre section of metal is stenciled with the words 'No Step'. Experts are trying to determine whether the fragment came from the missing jet. 

The latest recovery is further away from the search zone than the first piece of debris on Reunion. 

Despite the massive and costly search, air crash investigators still do not know exactly where the jet crashed. 

An interim report into the disaster determined the aircraft left its planned flight path shortly after take off and air traffic controllers lost contact with the jet 40 minutes later. 

A second interim report, updating any further factual details discovered by investigators is expected to be released on Tuesday. 

To determine the cause of the mystery, investigators would like to find the wreckage and in particular the cockpit voice recorder and flight data recorder which might hold vital clues. 

It is thought the aircraft has spent the past two years on the bottom of the Indian Ocean, which is as much as 15,000 feet deep - more than three miles. That is 2,500 feet deeper than the wreck of the Titanic and passed the capability of any manned submersible. 

At that depth, there is no chance, Martin Dolan, chief commissioner of the Australian Transport Safety Bureau, who are co-ordinating the search, of bringing the wreckage to the surface. 

Instead, crews will focus on finding the black boxes, although their locator beacons to assist their recovery will have run out of batteries. 

The Boeing 777-200ER, pictured,  vanished after leaving Kuala Lumpar on March 8, 2014 en route to Beijing

The cockpit voice recorder will have sound from the final two hours of the flight, including the noise coming from the engines and the sound of any explosion. 

The flight data recorder will have details of the aircraft's speed, altitude and how it was being flown, whether it was on auto pilot or if the captain or co pilot where at the controls. 

The Australian government is responsible for any recovery operation, including bringing any bodies to the surface. If the black boxes are found, they will be taken to Canberra to the ATSB headquarters for analysis. 

Even if the recorders are recovered, they may have been damaged by two years at the bottom of the ocean where the water pressure is 6,680psi. 

The black boxes from Air France Flight AF-447, which went missing from Rio de Janeiro to Paris in 2009, were recovered after two years at a depth of 13,100 feet from the Atlantic Ocean, where the water pressure was around 5,800psi. 

Investigators were able to recover vital data which provided valuable evidence as to why the Airbus A330-203 crashed into the ocean. 

Crash investigators are inspecting a piece of wreckage which was found last week on a beach in Mozambique

The first confirmed piece of wreckage from the aircraft, pictured,  was found on Reunion Island in July 2015

Malaysian transport minister Liow Tiong Lai, pictured, said experts were looking at the Mozambique evidence

Dolan said there were still funds available to continue the search for the missing jet. But if the plane is discovered when that budget has run dry, Australia will have to confer with other countries to figure out how to pay what would be a complex effort requiring specialised equipment.

The ATSB has gathered a list of companies with equipment capable of retrieving wreckage from the seabed. 

Crews would need to photograph and map the debris field, then get the specialised vessels and crews to the remote search site. 

All of that will take a couple of months. 

However, if the wreckage is located, there will be considerable pressure from within the airline industry and from regulators to provide answers as to why the aircraft cashed. 

The families of those who were aboard Malaysia Airlines Flight 370 have appealed to authorities to continue searching for the plane, which vanished two years ago with 239 people on board.

At a commemorative event on Sunday in Kuala Lumpur to mark the second anniversary of the jet's March 8 2014, disappearance, they released white balloons tagged with the names of everyone aboard the plane and the words: MH370: Always Remembered In Our Hearts.

Jacquita Gomes, who lost her husband, inflight supervisor Patrick Gomes, said the families are fighting for the search to continue "because our loved ones are not home yet, so how can we say it's the end?"

A search in the southern Indian Ocean has found no trace of the plane and is expected to end by June.