Cause of failed Alaska Airlines landing gear that sent passengers screaming revealed

Nearly 2 years aft passengers screamed portion sparks flew down a runway during the landing of an Alaska Airlines flight, the origin has been revealed.

A last study by the National Transportation Safety Board (NTSB) released connected Tuesday points to "incorrect" attraction work. 

The flight, which departed from Seattle, Washington, made a hard touchdown successful Santa Ana, Calif., during Tropical Storm Hilary aft the near main landing cogwheel collapsed connected touchdown.

Video recorded by a rider captured the level slamming into the crushed astatine precocious speed. Sparks were seen flying arsenic the level appeared to resistance its near helping on the tarmac.

ALASKA AIRLINES PASSENGERS SCREAM AS PLANE MAKES HARD LANDING AMID TROPICAL STORM HILARY: 'SPARKS OUTSIDE'

NTSB issued the last study for its probe into a 2023 Alaska Airlines landing that landed with a collapsed near main landing cogwheel astatine John Wayne-Orange County Airport successful Santa Ana, California. (@NTSB_Newsroom/X)

Investigators revealed that the incidental was caused by a "fatigue crack" of a metallic trunnion pin, which is portion of the near landing gear. The fracture formed from excessive grinding during a 2018 attraction overhaul, which introduced vigor harm to the metal. While the ace was initially not visible, it grew implicit clip and yet "caused the pin to fracture during landing," the NTSB study said.

"Results of this introspection and erstwhile NTSB investigations show that adjacent comparatively mild vigor vulnerability from grinding and/or machining during overhaul tin pb to cracking, which tin pb to fatigue ace maturation and failed landing gear components, arsenic occurred successful this accident," the study stated.

DELTA PLANE'S LANDING GEAR COLLAPSED DURING TORONTO CRASH-LANDING, INVESTIGATORS SAY

Firefighters with the Orange County Fire Authority helped passengers deplane Alaska Airlines Flight 1288 connected Sunday, Aug. 20, 2023. (Orange County Fire Authority)

The study added that the pin had endured much than 4,000 landing cycles since undergoing the 2018 attraction work. The ace itself had apt been contiguous for astir 800 landing cycles, the NTSB found. 

Although the craft sustained important harm from the hard landing, each 112 passengers and unit members were capable to deplane safely and without injury. 

Alaska Airlines Flight 1288 was forced to marque a hard landing astatine John Wayne Airport successful Orange County, California, amid Tropical Storm Hilary. (Orange County Fire Authority)

Alaska Airlines antecedently said, "our absorption is taking attraction of our guests who were connected board, including retrieving their checked bags."

"We apologize for the inconvenience and admit their patience during this situation."

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Alaska Airlines did not instantly respond to a petition for remark from Fox News Digital. 

Fox News' Chris Pandolfo contributed to this report.