Name: 美聯航波音777發動機損壞，與金屬疲勞一致。NTSB (Damage to United Boeing 777 engine consistent with metal fatigue: NTSB)
Uploaded: 2021-02-24T19:00:41.000Z
Duration: 1 min 38 s

A preliminary assessment has found signs of metal fatigue on the engine that failed on a United Airlines Boeing 777 flight of the weekend.

初步評估發現，週末美國聯合航空公司波音777班機上出現故障的發動機有金屬疲勞跡象。

Here it Theo engine failed with a loud bang four minutes after takeoff from Denver.

在這裡，它西奧的發動機在從丹佛起飛後4分鐘後，隨著一聲巨響發生了故障。

The National Transport Safety Board have been looking at damage to a fan blade, the chairman of the US air accident investigator told reporters.

美國航空事故調查員主席告訴記者，美國國家運輸安全委員會一直在研究風扇葉片的損壞情況。

It remains unclear whether the incident is consistent with an engine failure on a different Hawaiian bound United flight in February 2018.

目前仍不清楚該事件是否與2018年2月另一架飛往夏威夷的美聯航班機的發動機故障一致。

That failure was attributed to a fatigue fracture in a fan blade.

該故障是由於風扇葉片的疲勞斷裂造成的。

The engine that failed shed parts over a Denver suburb, the Pratt and Whitney engine, the PW 4000, is used on 128 planes, or less than 10% of the global fleet.

在丹佛郊區上空出現故障脫落的發動機，普惠公司的發動機PW4000，在128架飛機上使用，佔全球機隊的比例不到10%。

In another incident on Japan Airlines in December 2020 the country's Transport Safety Board reported it found too damaged fan blades, one with a metal fatigue crack on the same engine.

在2020年12月日本航空公司的另一起事件中，該國運輸安全委員會報告說，它發現了過於損壞的風扇葉片，其中一個在同一發動機上有金屬疲勞裂紋。

 The focus is more on engine maker Pratt Aunt analysts expect little financial impact on Boeing, but the P W 4000 issues are a fresh headache for the plane maker, which saw its flagship 737 max grounded for nearly two years after two deadly crashes, Investigators will continue to examine the United Engines Fan Blade on Tuesday. 

重點更多的是發動機製造商普拉特姨媽分析師預計對波音公司的財務影響不大，但P W 4000問題是飛機制造商的一個新的頭疼問題，在兩次致命的事故後，其旗艦737 max停飛了近兩年，調查人員將在週二繼續檢查聯合發動機風扇葉片。