US Army Grounds Entire Fleet of 400 Chinook Helicopters

Eideard

The US Army has grounded its entire fleet of some 400 CH-47 Chinook transport helicopters after engine fires broke out on a few of them, a spokeswoman for the service said Tuesday evening.

“The Army has identified the root cause of fuel leaks that caused a small number of engine fires among an isolated number of H-47 helicopters, and is implementing corrective measures to resolve this issue,” the spokeswoman, Cynthia Smith said in a statement…

The iconic twin-engine aircraft, an Army workhorse for six decades, is manufactured by the Boeing Co. and its engines are made by Honeywell International Inc…

Boeing referred questions to the Army. Honeywell said in a statement that, working with the Army, it had “helped discover that O-rings not meeting Honeywell design specifications had been installed in some T55 engines during routine and scheduled maintenance at an Army depot.

In other words, installing replacement O-rings from…

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