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During the press conference the Malaysia authorities spread more confusion about the location and timing of when the plane’s communication system was turned off.
Hishamuddin said the Aircraft Communication Addressing and Reporting System (Acars) was turned off just after the plane flew over the city of Kota Baru. The transponder was switched off near the Igari waypoint over the South China Sea.
But Malaysia Airlines chief executive Ahmad Jauhari Yahya said the Acars system could have been turned off at any time during a 30 minute period.
Olivine
Member DigitalSea started a thread found here that links to a well researched blog post postulating that Flight 370 could have "shadowed" Singapore Flight 68 over the Andaman Sea, India, Pakistan, Afghanistan & Turkmenistan.
Give it a read--it's compelling.edit on 3/17/2014 by Olivine because: (no reason given)
Malaysia's New Straits Times reported that investigators were considering the possibility that the Boeing 777 dropped to 5,000ft or potentially even lower to avoid detection.
It suggested that the aircraft might not have roused the suspicions of those watching military radars if it followed commercial routes. It also cited unnamed sources as saying the plane had flown low over the Malay peninsula.
It is unclear where the altitude estimate originated and experts said that if it came from radar data it could well prove incorrect.
Aviation safety expert Sidney Dekker, of the Safety Science Innovation Lab at Griffith University in Brisbane, Australia, noted: "Particularly over oceanic areas, radar coverage is extremely unreliable and partial."
He dismissed the idea that flying at 5,000ft would put extensive strain on the airframe, as some have suggested: "The only really relevant effect is a dramatic increase in fuel use – its range would be very much shortened by that," he said.
Jason Middleton, head of the aviation department at New South Wales University, said avoiding the radar was a well-known technique used by drug runners and others.
He added: "Radar goes in a straight line. If you are in the shadow of a mountain or even the curve of the Earth – if you are under the radar beam – you can't be seen.
"The further [radar beams] go out the weaker they are and the further they need to come back. Radars have dead zones which are low and also which are far away."
Kazakhstan has played down speculation that the missing plane could have reached its airspace.
A spokesperson for its civil aviation committee said MH370 would have been detected by Kazakhstan’s radar, if had got that far.
Reuters quoted the official as saying that nine Malaysia Airlines flights travelled over Kazakhstan on 8 March. None of them were MH370.
IQPREREQUISITE
puntito
IQPREREQUISITE
If on a normal day, what would make a pilot climb 45k feet if the plane was already cruising at 35k feet.
We have step climbs. Say the aircraft is cruising happily at FL330, once we've burned enough fuel and our optimum cruise level increase with respect to the cost index and ZFW(zero fuel weight), we would climb an extra 2000ft to FL350. The CDU displays 2 Flight levels, a maximum flight level and optimum flight level. Both of these flight levels are affected by winds-aloft and weight of the aircraft. The only difference is, the optimum flight level varies with respect to fuel burn. Optimum flight level is usually lower than the maximum. What would cause them to climb to 45000 feet( that's above the max ceiling of 43100 feet) ? I can only guess.
IQPREREQUISITE
If on a normal day, what would make a pilot climb 45k feet if the plane was already cruising at 35k feet.
MH370: missing plane's co-pilot made last verbal communication, officials say
Fariq Abdul Hamid is believed to have uttered last words to air traffic control at 1.19am, just before plane's transponder stopped
TWO crew members of mystery plane had flight simulators at home: Now steward on board the Boeing revealed to have had one as well
Read more: www.dailymail.co.uk... belonging-member-cabin-crew.html#ixzz2wE3KzmkM
Boeing777
reply to post by Boeing777
The elevators are out of shape. Notice it?
If you're referring to me, that was my whole point. We have reliable altitude data for the first two hours, then some military radar data without transponder for part of the third hour, and for the remaining four hours it seems like a lot of guesswork. People were making claims about what the altitude was during the final four hours, and I was saying the claims seem speculative. Your source seems to agree.
theabsolutetruth
For all you guys arguing about altitude, reports have said all along that that the altitudes are debatable due to the unreliability of the exactness of data over oceans etc.
Is there any point arguing over UNCONFIRMED altitudes from pings?
theabsolutetruth
Reports are that it was the co-pilot that said last transmitted words. Also that another crew member had a flight simulator.
washingtonexaminer.com...
House Homeland Security Committee Chairman Michael McCaul said on Sunday that all evidence surrounding the mysterious disappearance of Malaysia Airlines Flight 370 points towards the pilot or copilot. “Something was going on with the pilot,” the Texas Republican said on “Fox News Sunday.” “I think this all leads towards the cockpit, with the pilot and copilot.”
Boeing777
IQPREREQUISITE
If on a normal day, what would make a pilot climb 45k feet if the plane was already cruising at 35k feet.
We have step climbs on long flights. Lets say the aircraft is happily cruising at FL330, once the aircraft becomes lighter by burning enough fuel, we would climb to FL350 with a step climb of 2000 feet. Step climbs are constant most of the time because climbing 1000ft would bring us up to planes flying in the opposite direction hence causing a collision. This is to allow at least a 1000 feet gap between planes with a track course of 0-180 degrees and 180-360 degrees.
If you decide to cruise above the optimum FL and at a faster cruising speed(excluding tail wind), you'll end up burning more fuel than what was initially planned.
The CDUs usually give us two flight levels, maximum and optimum. Maximum FL is the highest flight level the aircraft is able to cruise in depending on the aircraft's weight and winds-aloft. Optimum FL is a recommended flight level for the best fuel efficiency depending on the cost index set, weight and winds-aloft.
Maximum flight level and ceiling are different. You could be cruising at FL290 on a heavy flight, and have a maximum FL shown as 33000 feet in the CDU while ceiling always remains at 43,100 feet. Anything above the ceiling is not safe.
what would cause them to fly above the ceiling? I can only guess.edit on 17-3-2014 by Boeing777 because: (no reason given)