Paphitis wrote:Kikapu,
they have not found it now as we speak as far as we know, but that does not mean they will not find it. I believe they will.
So why have they not found it yet? For a variety of reasons. The debris is constantly moving with the current and out there you get effected by weather and sea swell. The seas can get quite lumpy and with "snow caps". The debris is also semi-submerged
The aircraft being used hunt submarines. They have Magnetic Anomaly Detection for detecting big hunks of steel beneath the waves. If the debris is from MH370, and has any markings on it, such as MAS then they may have already identified the debris as belonging to MH370, but the Americans, Australians or the Chinese will ever reveal that.
Some sections of B777 are Carbon Fibre and would float no problem. However, they can't be picked up by MAD.
So they rely on FLIR and the naked eye. A search, despite all the gadgetry, is as rudimentary as flying a Grid Search Pattern. Fly 000 for a minute, 090 for a minute, 180 for 2 minutes, 270 for 2 minutes, 000 for 3 minutes. They are in the search area for about 4 hours. Transit to and from the search area is about 8 hours. Then, it's all down to Observers looking out the window with binoculars and looking at the FLIR. They been using that technique since the beginning of aviation. Some things just don't change after all despite the technology. The cost of the search in the Southern Ocean just in the last 4 days has exceeded over 100 million. Australian tax payers have foot over half of the total bill.
They can in fact fly over the top of it. It is quite hard when there is a swell, and they do vary their altitude between 300 and 2000FT. Lower levels give shallow field of vision and you move over the water quite quick. At higher levels you can see more, but the ocean surface looks like a mosaic of "white caps".
I understand all of you have written, but you have not addressed the LAT-LONG coordinates that must come with any new satellite sightings and time. From that point, it's not so difficult to work out how far the object will move based on current strength and direction at any given time. I also know that this area have heavy seas and winds, and if the plane did crash in this area, I doubt they can ever recover the black boxes.
One other thing. What part of the B-777 possible be a piece that can be 12m x 24m and float? The wing? Fuselage? That's a large piece to remain intact had the plane crashed into the sea at high speed.