Officials are working “non-stop” after a spectacular engine failure in a U.S. flight and dozens of Boeing 777 aircraft landing around the world, aviation regulators said Tuesday. ..
A United Airlines plane to Honolulu scattered debris on the outskirts of Denver on Saturday, but no one was injured in the air or on the ground.
“We want to understand what happened and take the necessary steps to prevent similar recurrences,” Federal Aviation Administration Secretary Steve Dixon said at an aviation safety town hall meeting.
“I was lucky that there were no casualties,” Dixon added. Dixon reiterated that authorities are developing new airworthiness regulations that require stricter inspections.
Comments were made after investigators pointed out metal fatigue as the main suspect in the case-Boeing’s new retreat recently resumed long-range 737 MAX delivery after two fatal clashes. It’s just.
Aviation experts also say that there are new questions about the FAA, which was totally attacked by monitoring Boeing with 737 MAX certification, and whether on-flight maintenance is appropriate.
Even before the Denver incident, US aviation safety regulators were considering stricter inspections of jets and their Pratt & Whitney engines, US officials said Tuesday.
A FAA spokesman said after the Japan Airlines fan blade accident on December 4, last year, “we were identifying the cause of the damage and evaluating whether to adjust the blade inspection,” inspection records and maintenance. He said he reviewed the history. The plane landed in Japan without injury.
After another February 2018 incident at United Jet, the FAA reviewed 9,000 fan blade inspection reports and issued an Airworthiness Directive to set new rules for inspection.
At a briefing on Monday night, the National Transportation Safety Board said whether the Denver issue was similar to the flight issue of Japan Airlines, or the February 2018 incident involving another Boeing 777 and Pratt & Whitney engine. He said it was premature to know if it was similar to.
“Preliminary field trials show damage consistent with metal fatigue,” NTSB Chair Robert Samwalt told the briefing.
He said two fan blades were damaged on the second engine of the Boeing 777-200 on Saturday. One of them was later discovered on the soccer field and the other remained on the engine.
The NTSB also looked at United Airlines inspection records and said, “I knew who could do what and what to do.”
“Fatigue means that a material can crack, and if you load it many times, the cracks will grow slowly,” said Robert Kielve, a professor of engineering at Duke University.
“This is an example of an event where we learned something about design 20 years after the service went live, immediately grounded the fleet, figured out what was happening, and fixed it.”
In the wake of the Denver incident, Boeing said all 128 777s with Pratt & Whitney engines were grounded.
Of the 128 aircraft, only 69 were in service and 59 were in storage.
Affected airlines included Japan Airlines and All Nippon Airways, South Korea’s Asiana Airlines and Korean Air, as well as United, which had 24 planes no longer in service.
Delta’s flight on a Boeing 757 on its way from Atlanta to Seattle on Monday night was “paid with caution, with an indicator warning that one of the engines could be a problem. Directed to Salt Lake City. Said.
“The flight landed safely and taxied to the gate without assistance.”
Boeing has just recently resumed delivery of the 737 MAX after 20 months of global ground contact after 346 people were killed in two crashes.
MAX began returning to commercial service in late 2020, with airline travel still depressed by the coronavirus pandemic.
Boeing executives said last month that they expect it to take about three years for activity to return to pre-pandemic levels.
Michel Merluzeau, an expert at consultancy AIR, agreed that the latest issues do not seem to be due to inadequate airplane design.
“It doesn’t really matter to Boeing,” he said. “It’s a maintenance issue. How United or Pratt & Whitney maintains an engine that has been in use for some time.”
“It’s an embarrassing headline, but as a practical matter, it doesn’t affect Boeing,” said Scott Hamilton of ham news site Leeham News.
US Authorities Working ‘Non-stop’ On Boeing 777 Engine Problem Source link US Authorities Working ‘Non-stop’ On Boeing 777 Engine Problem