Cockpit audio indicates de-icing problems in deadly Brazil plane crash last month, investigators say

[Pelican Press 0]

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Cockpit audio indicates de-icing problems in deadly Brazil plane ****** last month, investigators say

SAO PAULO (AP) — The pilots of a Brazilian passenger plane that crashed last month, ******** all 62 people aboard, reported ******** in the system to remove ice from the plane, according to a preliminary report made public Friday.

Investigators in Brazil were careful to avoid saying this was the cause of the accident, and stressed there was more work to be done. Still, their report lent further credence to aviation experts’ main hypothesis: that the lift loss had been caused by ice formation on the plane’s wings and ******** of its de-icing system.

Weather reports from the day of the accident predicted ice formation in the region where the plane went down.

Audio from the cockpit’s voice recorder included comments from pilots indicating ice was accumulating and there was a ******** in the de-icing system, Paulo Fróes, an investigator in the the air force’s center for the investigation and prevention of air accidents, told reporters in Brasilia.

Just two minutes before the ******, the copilot said, “A lot of ice.”

The plane’s data recorder also indicated that its de-icing system, responsible for preventing ice build-up on wings, turned on and off several times, according to their report.

“There are still many doubts. This accident shouldn’t have happened, not in the conditions in which the plane was flying and was being operated. It had protection equipment,” said Carlos Henrique Baldin, head of the center’s investigation division.

Operated by the airline Voepass,

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in Parana state, bound for Sao Paulo’s Guarulhos international airport. It crashed into the backyard of a home in a gated community in the city of Vinhedo, about 80 kilometers (50 miles) northwest of the metropolis of Sao Paulo.

Footage of the ATR 72 twin-engine turboprop plunging while in a flat spin horrified people across Brazil.

“Based on the preliminary report, it isn’t possible to conclusively affirm that ice on the wings caused the accident, but there are indications ice formation was a significant contributing factor,” Henrique Hacklaender, the president of the national aviators’ union, told The Associated Press after the press conference.

Hacklaender said the ATR 72’s de-icing system is manually controlled by pilots, and the preliminary report reveals that it was activated during the flight, indicating an attempt to use it. However, the report doesn’t clarify if the system was actually employed, he added.

The air force’s center, known as Cenipa, is continuing its investigation into the cause of the accident with no set deadline for conclusions. They’re also collaborating with an ongoing Federal Police inquiry to determine if anyone is liable for the ******.

ATR is a French-Italian company. Its model 72 is generally used on shorter flights. The planes are built by a ****** venture of Airbus in France and Italy’s Leonardo S.p.A. Crashes involving various models of the ATR 72 have resulted in 470 deaths going back to the 1990s, according to a database of the Aviation Safety Network.

It was the deadliest airline ****** since January 2023, when 72 people ***** on board a Yeti Airlines plane in Nepal that stalled and crashed while making its landing approach. That plane also was an ATR 72, and the final report blamed pilot error.

An ********* Eagle ATR 72-200 crashed on Oct. 31, 1994, and the U.S. National Transportation Safety Board determined the probable cause was ice buildup while the plane was circling in a holding pattern. The plane rolled at about 8,000 feet (2,500 meters) and dove into the ground, ******** all 68 people on board. The U.S. Federal Aviation Administration issued operating procedures for ATRs and similar planes telling pilots not to use the autopilot in icing conditions.

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