The cause of the fatal plane crash in South Korea last month is still to be determinedflauta777, but it thrust into the spotlight a subject little understood by the general public: how airplanes are maintained.

Jeju Air, the airline that operated the flight in which 179 people died, said that checks before the flight had raised no concerns and that the jet, a Boeing 737-800 that was about 15 years old, had no history of accidents.

While there is no evidence that poor upkeep played a role in the crash, experts say that the plane’s repair history, which includes work performed by maintenance firms in other countries, will be an important part of the crash investigation, as is typically the case.

Here’s what you should know about how airplanes are maintained.

flauta777The Basics

Airline executives, pilots, mechanics, regulators and others play vital, and overlapping, roles in taking care of commercial jets.

At the front line is a practice that will be familiar to many travelers even if they don’t know what it is called: line maintenance, which involves regular inspections and repairs between flights. Before a jet takes off, pilots perform visual and other inspections for damage or other problems. Airline mechanics also conduct periodic checks. Often, a mechanic can troubleshoot a problem quickly,66jogo Jogos de Cassino Online no Brasil fixing it or safely patching it up until the issue can be addressed later. Serious problems can result in a long delay or cancellation.

New research led by Dr. Tello-Ramos, published on Thursday in the journal Science, provides the first evidence that groups of birds that build their homes together learn to follow consistent architectural styles, distinct from groups just a few dozen feet away.

On Friday, Ms. Harris will stop along a stretch of that 2,000-mile dividing line in the political battleground of Arizona, directly confronting an issue that polls show remains a major weakness for her. It will be her first visit to the border as a presidential candidate, and her first since 2021, when she was given the diplomatic mission of tackling the root causes of migration from Guatemala, Honduras and El Salvador.

In addition, every part of a plane, down to the nuts and bolts, is subjected to routine inspections, repair or replacement. Those checks are typically scheduled based on how many hours the plane has been used, the number of flights, time or some combination of those factors. These inspections are overseen by aviation authorities around the world, with many following the lead of regulators at the Federal Aviation Administration or its European Union counterpart.

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