A Number of Affected as Rough Air Impacts A Delta Airlines Flight Arriving in Sydney, Australia

Multiple passengers and crew were hurt after a Delta Airlines aircraft originating in LA to Sydney experienced turbulence on Friday morning.

Flight DL41 "encountered brief turbulence" as it landed at Sydney Airport, an airline spokesperson stated. Four flight attendants required medical attention.

Local paramedics reported they evaluated five patients, and took three to a medical facility with minor injuries that comprised pain in the back and migraines. The injured were between their 30s up to the 70s.

This marks the latest incident of planes experiencing severe turbulence, with aviation specialists saying that global warming is a significant contributor.

The aircraft was carrying nearly 250 travelers and 15 crew members on the aircraft, the official noted, adding that the plane arrived "safely and normally" at Sydney Airport at shortly before 7 a.m. on the day in question.

The NSW Ambulance Service said they got a call just three minutes prior to the plane landed, and emergency vehicles were waiting on the tarmac.

Why plane turbulence is getting more frequent - and often stronger.

In the previous year, 25 people sustained injuries when a Delta Airlines flight, flying from Salt Lake City, Utah to Amsterdam, hit "significant" atmospheric disturbance just two hours into the lengthy trip, and had to make an emergency landing.

Recently, passengers and crew on a Singapore Airlines flight endured a terrifying five seconds period of extreme instability. A traveler lost their life and numerous people sustained injuries, as unbelted passengers rose out of their seats and fell back down.

Bumpy air is a common occurrence during flights, and while instances of strong or severe turbulence appear to be increasing, they are still very rare.

Estimates show that there are approximately five thousand cases of significant in-flight disturbance each year, out of a total of over 35 million aircraft departures that are conducted globally.

Severe turbulence is described as when the vertical motions of a plane passing through disturbed air generate greater than 1.5 times the force of gravity on your body - enough to propel you from your seat if you did not have on a safety belt.

As global warming shifts atmospheric conditions, specialists caution that air travel could become bumpier: warming trends and changing jet streams in the upper atmosphere are projected to boost the frequency and intensity of significant turbulence.