Понедельник, 28 Мая, 2018

United inspecting 737 engines following service bulletin

Engine manufacturer, FAA call for immediate inspections after Southwest Airlines fatality FAA expected to order accelerated engine checks after Southwest accident
Preston Stone | 21 Апреля, 2018, 05:01

USA investigators looking into the Southwest Airlines accident that left one passenger dead are focusing their probe on the plane's left engine, where a fan blade broke off and burst out of the casing.

CFM International, a joint venture between America's GE Aviation and France's Safran Aircraft Engines, said it "recommends ultrasonic inspections within the next 20 days to fan blades of CFM56-7B engines with more than 30,000 cycles since new". It broke the engine apart and sent metal parts slamming into the 737.

Family members identified her as 43-year-old Jennifer Riordan, a banking executive and mother of two from Albuquerque, New Mexico.

Sumwalt said the fan blade, after suffering metal fatigue where it attached to the engine hub, suffered a second fracture about halfway along its length. The plane made an emergency landing at the airport of Philadelphia.

"Engine failures like this should not occur", Robert Sumwalt, chairman of the NTSB, said on Wednesday.

The NTSB investigation should provide additional insight into whether the tragic incident that cost one passenger her life could have been prevented with additional inspections.

The US Federal Aviation Administration's, FAA, announcement late Wednesday comes almost a year after the engine's manufacturer recommended the additional inspections, and a month after European regulators ordered their airlines to do the work.

Читайте также: Prince investigation evidence released to public

DALLAS - Southwest Airlines sought more time a year ago to inspect fan blades like the one that snapped off during one of its flights Tuesday in an engine failure that left a passenger dead.

Although the FAA said the directive would apply to about 220 engines, airlines said that because fan blades may have been repaired and relocated, it would affect a far greater number. Southwest announced Tuesday it was conducting ultrasonic tests on all engines of the same vintage. A spokeswoman said it was a visual inspection and oil service of the engines. Southwest told the FAA in October that airlines needed 18 months and that only certain fan blades should be inspected, not all 24 in engines.

More than 150 have already been inspected.

If the FAA directive follows the original proposal, engines with more than 15,000 hours of use must be inspected within six months. A cycle includes one take-off and landing.

The said this should be done as soon as possible. Philadelphia's medical examiner said she died from blunt impact to her head, neck and torso.

While failures on engines are rare, a 2008 report by the FAA found that "a number of rotor disk fracture and cracking events have originated from embedded anomalies", which were not detected during production inspections.

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