Nightly News | April 28, 2014
>>> for the missing malaysia airlines entered what could be a long and difficult phase. under water entirely as the air operation, the part of this that was looking for wreckage on the surface of the water now comes to an end over seven weeks after the aircraft disappeared. katy tur is in perth, australia. good evening.
>> reporter: good evening, brian. it's not the news they wanted to come, announcing yet another new face of the investigation. they are suspending the aerial search and widening out the under water search since the current location offered them new clues. in audition to blue fin 21, they will seek help from contractors with sophisticated technology like orion that can go deeper and send back data in realtime. the new search zone is tens of thousands of square miles , roughly the size of indiana. they say it will take eight months to search if all goes well and cost upwards of $50 million. meanwhile, families just as frustrated as ever and once again, they are questioning if they are even searching in the right zone. brian?
>> katy tur for us remaining on the investigation.