Fugro Discovery

MH370 search: winter may make it un-viable

David Learmount , , , , , , ,

The Australian Transport Safety Board reports that the search for the missing Malaysia Airlines flight MH370 is increasingly likely to be compromised by bad weather as the southern hemisphere winter advances.

The latest ATSB report says: “Poor weather conditions prompted the crew of Fugro Discovery to recover the deep-tow vehicle and go to weather avoidance on 8 May. The vessel is expected to depart for Fremantle later today.

“Fugro Equator departed Fremantle for the search area on 6 May but poor weather has slowed transit to the search area. The vessel is anticipated to arrive on 11 May but weather conditions in the coming days are expected to preclude search operations.

“Dong Hai Jiu 101 completed testing of the SLH‑ProSAS‑60 deep tow system and departed for the search area on 10 May.”

The sea conditions report speaks of 12m high waves and 50kt winds, but the Board says searches will resume whenever the weather permits.

This does not sound promising because the search is nearing its end, as the ATSB explains: “It is anticipated this will be completed around the middle of the year. In the absence of credible new information that leads to the identification of a specific location of the aircraft, Governments have agreed that there will be no further expansion of the search area.”

But if they do find the wreckage within the remaining search area, Malaysia, China and Australia are committed to recovering it all.

When they find MH370, what then?

David Learmount , , , , ,

The determination to find the missing Malaysia Airlines Boeing 777 is palpable, shared by the three main parties to the search: Australia (leading the search process), Malaysia (obviously) and China (more Chinese citizens were lost on the flight, whose destination was Beijing, than any other nationality).

These nations, aided by expertise from many others, work together through the Joint Agency Coordination Centre, an organisation set up by the Australian government at the end of March 2014, the month in which the aircraft went missing.

The specialist search vessel Fugro Discovery returned to the search area on 3 December after an interruption caused by a crew medical emergency. The operation so far has searched 75,000 square kilometres of the southern Indian Ocean floor, but the JACC says there are 45,000 more yet to search in the areas calculated to be the aircraft’s most likely resting place.

Fortunately, as summer advances in the southern hemisphere, search operations become easier and suffer fewer interruptions.

So when they find it, what next? This is what the JACC says: “In the event the aircraft is found and accessible, Australia, Malaysia and the People’s Republic of China have agreed to plans for recovery activities, including securing all the evidence necessary for the accident investigation.”

For relatives of those lost with the aeroplane, that also means hope of recovering some remains. The Chinese affected have been so horrified and angered by the MH370 story that it has soured relations between China and Malaysia.

If the aeroplane was ditched intact, this hope could be borne out, but no-one can pretend they know it was. The indicator the people cling to is that only one small piece of wreckage from the aircraft has been found, so they hope this indicates that the aircraft sank more or less intact.

For those interested in finding out more about how the search areas have been defined, the Australian Transport Safety Board has just released a report.

For some background, look to the blog entry I posted in November which explains why I am optimistic about this phase of the search.

 

Latest phase of MH370 search gets interesting

David Learmount , , , , , , ,

On 3 November the Australian Transport Safety Bureau resumed the deep sea search for the lost Malaysia Airlines flight MH370 [but see update at end of story].

Refuelled, replenished and ready to go, the ATSB’s survey ship Fugro Discovery has arrived on station once more in the southern Indian Ocean (see footnote for an update).

For those seeking a reason to be optimistic following a discouraging 20 months of searching the ocean without a result, there is definite cause for renewed hope this time.

Since it began the search the ATSB has been scrupulously methodical, scanning the ocean floor within a long, slender curved rectangle that encompassed what became known as the “7th arc”. This is a long line on the earth’s surface established by vestigial radio responses from the fatal aircraft to Inmarsat satellites just as it was running out of fuel.

Theoretically the Boeing 777 could have come down anywhere close to it, but working with the aircraft’s last radar position the ATSB identified the arc sector where the aircraft could realistically have come down, and has searched almost all of the identified curve and its close vicinity.

Since it has now trawled almost all the 7th arc’s viable sector and not found the wreckage of MH370, there is not much more to search. Logic says they must be getting close.

But not only logic.

For those who doubted MH370 came down in the sea at all, the fact it did so was established in July when one of its flaperons was washed up on a beach on the Indian Ocean island of La Reunion. This fact was forensically confirmed more recently by the French air accident investigation agency BEA.

But there’s another reason for optimism: on 22 December last year Flightglobal published a mathematical/geometric calculation by Boeing 777 captain Simon Hardy, also a mathematician, which indicates precisely where, according to his calculations, MH370 came down.

The search sector that Fugro Discovery has just begun to trawl encompasses Hardy’s predicted position for MH370. His recent refinements to the aircraft’s final descent profile put it at S39 22′ 46″ E087 06′ 20″. He adds, however, that depending on how long the aircraft floated, the main wreck could have drifted some time before sinking, and even during the descent could have travelled laterally. At this location he would expect to see mainly “some moveable aerodynamic surfaces, like the missing part of the flaperon that we already have, and parts of slats and flaps and maybe even the RAT [ram air turbine].”

This could be said to be the last chance for the search under present estimated criteria, because 777 performance dictates that the aircraft could not have flown further than this extreme southern end of the 7th-arc-defined potential ditching area.

Anyone who has published material on the web knows that it may receive praise, but it will certainly receive criticism. The impressive fact about Hardy’s mathematics is that, despite hundreds of thousands of hits on the article containing his calculations, nobody has been able to blow a hole in them.

By 3 December Fugro Discovery expects to have completed the search of the area containing, according to Hardy’s calculations, the wreck of MH370 and the remains of those who went down with it.

Hardy says he says he is excited about the next month’s search, having invested more than a year of mental and emotional energy into working out where MH370 flew, and why. He wants it found.

He’s not alone.

Watch this space for more on MH370.

LATE NEWS: On 5 November Fugro Discovery had to suspend the search and return to Fremantle, Western Australia, according to Australia’s Joint Agency Coordination Centre, because one of the crew developed suspected appendicitis.

UPDATE: Fugro Discovery was due to arrive back in the search area on 3 December.