some boeing 737s are being grounded. here’s what that means. - home battery system
As the investigation into Sunday's 737 Max 8 fatal crash in Ethiopia continues, regulators in China and Indonesia are shutting down planes, some airlines in other countries are also voluntarily stopping their services.
In the United States, the Federal Aviation Administration certified the best version of the latest version of Boeing-
Despite increasing doubts about the safety record of the aircraft, the sale of the jet as a flight-worthy aircraft in 2017 did not take this step.
On Monday night, the agency issued a memorandum, known as a continuing airworthiness notice to the international community, without reference to plans to land the 737 largest aircraft. Robert W.
Mann, an aviation consultant in Port Washington. Y.
, Describes what the grounding needs and the factors that the regulator considers when deciding to order the grounding.
His answer has been condensed and edited for clarity.
What is grounding?
When the relevant safety regulator (the F. A. A.
(US or European aviation security agency)
Remove the airworthiness certificate of a certain type of aircraft.
In practice, this makes it impossible for these aircraft to be used in that jurisdiction and in other jurisdictions authorized by a particular regulatory authority.
There are various forms on the ground.
They can ask the aircraft to stop using immediately, and they can specify a remedy even before they specify a remedy.
Aircraft can also be grounded at a certain time or after a flight, during which the airline operating the affected aircraft can decide when and how to inspect and repair them.
This grounding happened recently last spring when the engine failure of Southwest Airlines Flight 1380 caused F. A. A.
Ordered a more careful inspection of an engine manufactured by CFM International.
What does F need? A. A.
Let a team of planes land?
Regulators must conclude that some inherent design or manufacturing problems are prevalent.
The worst example is Macdonald Douglas, DC.
In 1979, more than 250 people were killed in an American Airlines accident in Chicago.
This is the worst case from the airline's point of view, because from the date the order is in effect, you don't have a plane to use in your fleet, so your schedule is canceled
In the accident I remember, it was a concern that whoever operated the aircraft could have some sort of fatigue or maintenance procedure problem.
When was the last F? A. A.
Stop the fleet?
The most recent flight was suspended in 2013, when the Federal Aviation Administration ordered the Boeing 787 to temporarily stop flying after problems with the aircraft's battery system.
This grounding is very rare and should be the same.
If they happen a lot, you will come to the conclusion, comment-of-
Design or review-of-
Insufficient manufacturing process.
787 what happened in the case?
In recent times, a battery system fire broke out on an all-day air carrier aircraft, and a few days later, a Japanese airline aircraft arrived in Boston with a tail cargo fire indication.
The order of these two battery fires is very close, indicating that these batteries may have problems with heat out of control.
Boeing designed a way to isolate the problem by first conducting extensive analysis of the battery pack. The F. A. A.
Make sure there must be some way to isolate these batteries if you have a problem.
Boeing has designed a stainless steel box with batteries and discharged it into the atmosphere.
If there is a battery fire in the box, it will control the battery fire and leave the battery ventilated outside the aircraft, instead of burning to the cabin or cargo compartment.
As far as I know, this fix is still flying today.
A few years later, an Essel 787 aircraft caught fire at Heathrow Airport, caused by an emergency battery.
It took about 15 months to figure it out.
In this case, the location beacon is banned and exited from the service.
How long does the ground usually last? It varies.
The question is if you have any suggestions on how to remedy the problem or if there is anything that needs to be remedied.
If this is just a problem, it is to strengthen what needs to be done to respond to a particular event, you train for it, you test it, and that's what you do.
But if there is a need to redesign the system and then there is a question as to whether or not you have issued a temporary command with the focus on how to make this system meaningless or whether a bigger change is needed.
In the case of a maximum of 737, in fact, every day someone flies the plane without any problem, which indicates that some kind of anomaly is happening, or why it doesn't seem to happen here or in China. hundreds of them are flying.
It is not clear what is the direct cause of these special events.
Although Southwest and American Airlines said they would continue to work with the Max 8 fleet, other airlines have stopped using as the investigation continues.
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Note: Jet Airways have not flown any Maximum 8 hours since the beginning due to financial difficulties.