US agency finalizes Boeing 777 safety guidelines after engine failure

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(In paragraph 6, “The agency ordered the immediate inspection of aircraft 777” is not correct, “The agency ordered the immediate inspection of aircraft 777”)

WASHINGTON (Reuters) – The U.S. Federal Aviation Administration (FAA) is finalizing three safety guidelines that will allow some Boeing 777s to return to service with Brad & Whitney 4000 engines.

The new final flight eligibility guidelines include models such as the United Airlines 777, which experienced problems shortly after departing from Denver, United States, in February 2021. This episode was marred by rain of waste that fell in neighboring towns. The aircraft returned safely to the airport as no one was injured in the incident.

The FAA says the new guidelines call for enhanced inspections and modifications that will allow Boeing 777-200s and 777-300s powered by Brad & Whitney engines to fly again after more than a year on the ground. The rules were proposed in December after three reports of aircraft failures to engine propeller blades.

An order is required to install debris shields on the inside wall of the thrust reverser, inspect components for moisture injection, and frequently check hydraulic pump valves. The other must be replaced in order for the motor to withstand the failure of the motor fan blades. According to the results of the study, specific corrections could be necessary for a third of the surface.

The orders will go into effect in mid-April.

In February 2021, the United States Transportation Safety Board (NTSB) ordered the immediate inspection of 777 aircraft equipped with PW 4000 engines before further flights, following the discovery of a cracked plate on the engine fan of the aircraft. plane United.

Boeing is now expected to develop a service bulletin outlining the steps airlines should take to meet their needs. The bulletin must be approved by the FAA before flights can resume service.

((Sao Paulo Translation Newsroom, 55 11 56447500))

REUTERS BC AAAA


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