WASHINGTON Cheap Zay Jones Jersey , March 13 (Xinhua) -- Messages sent by a maintenance alert system cannot provide the "physical location" of a missing plane but indicate whether there are system or engine failures, a U.S. expert said Thursday.
The Wall Street Journal reported earlier in the day that the communication system of the missing Malaysia Airlines plane, a Boeing 777 with 239 people on board, continued to "ping" a satellite for a number of hours after the plane disappeared off radar early Saturday.
The signal came from the jet's "airplane health management system," or Aircraft Communication Addressing and Reporting System (ACARS) Cheap Tre'Davious White Jersey , which provides a flow of data on the airliner's operations, said the report.
The newspaper later retracted one detail in its original report, which had incorrectly stated that U.S. investigators were looking at data automatically downloaded and sent to the ground from the plane's Rolls-Royce Trent engines.
"I've heard conflicting versions of exactly what the WSJ was reporting. That may have been the ADS-B system, Automatic Dependent Surveillance-Broadcast system, which sends a signal twice per second broadcasting the aircraft position and altitude Cheap Kelvin Benjamin Jersey ," Bill Waldock, an expert on aviation accident investigation from U.S.-based Embry-Riddle Aeronautical University, told Xinhua.
"It's a newer airplane-based GPS system that air traffic control uses near land in addition to the radar transponders to track the airplane," Waldock said.
If the ADS-B was still working properly, air traffic control should have been able to track the aircraft within 150 to 200 miles (240 to 320 km) of land Cheap Kyle Williams Jersey , he said.
"The ACARS system should't be sending location or speedaltitude data unless someone was entering them manually," Waldock said, adding that its primary use is as a maintenance planning tool for the airline.
"The automatic feature periodically transmits 'bursts' of condensed system condition and function data," said the expert.
He said that before Air France Flight 447 crashed into the Atlantic on June 1, 2009 Cheap LeSean McCoy Jersey , the French airline's maintenance headquarters received four bursts of such data.
"These indicated multiple system failures and the last indicated a loss of pressurization. The main problem is that the data in a single burst isn't time-sequenced, so it is difficult to determine the order in which they occurred," Waldock said.
He said it is also possible for the pilots to send short messages through the system using a manual console in the cockpit.
Asked whether all airlines are equipped with the system, he said ACARS is operated by an independent organization as an add-on cost to the airline.
"Most modern airliners have the system in various configurations," he said.
Home > Parenting > Good ParentingHow To Pre-Qualify For An FHA Home Loan
FHA home loans are mortgages that are insured by the United States government, more particularly the Federal Housing Administration. FHA in itself does not make the loans. What they do is that they insure the loans that were in turn, given out by their qualified group of commercial lenders.
With the introduction of the FHA home loan, a lot of low-income Americans were able to secure a loan to purchase their homes. FHA home loans are conceptualized in 1930's during the time of the Great Depression. The government acted to subsidize loaning programs through FHA in response to the growing rate of defaults and foreclosures.
The good news is that FHA is for every American. But they have to follow the set guidelines in applying for it. To know if you qualify for an FHA home loan, here is a checklist that you can use. See for yourself if you can take advantage of FHA's easy mortgage loan plans.
1. First and foremost Cheap Josh Allen Jersey , you should have a steady employment history. By this, you should be able to prove to the agency that you have at least two years of service with your current employer. Stability of job and income is the main factor. That's the primary requirement of FHA.
2. You should have an increasing income, or at least, a consistent one. So that FHA can correctly assess your capability to pay, you should show them that in your current job Cheap Dawson Knox Jersey , you are earning a fixed amount. And if in case it is not the case, your income should follow a steady rising pattern, not a fluctuating one.
3. You should be able to boast about your credit history. Your credit report definitely says a lot about your financial status. It is FHA's requirement that all their applicants are in good credit standing. And not only that, they also require that there is not a single payment over due for more than a month within the last two years in their credit reports.
4. You should also show that you've got no history of bankruptcy. Or even if you had, it should be at least two years before. You should also show and that you already had regained financial stability for the past two years. You should be in a good credit standing for two consecutive years.
5. Your foreclosures Cheap Devin Singletary Jersey , if any, should be three years old at the very least. This one follows the same principle as the bankruptcy rule stated above. It is a must that for the past three years, what you have is a good credit standing.
6. You can only apply for a loan that is 30% of your total monthly income. If you have everything else worked out, remember this last important detail: FHA will approve you a loan corresponding to your gross income. So, do not apply for one that exceeds 30%. Your application will just be denied. Look and settle for a house that is just within the set limits.
These are the different points to consider when applying for an FHA loan. You should qualify in the every step stated here. These are the exact guidelines that FHA is currently following.