The U.S. Army temporarily grounded its fleet of CH-47 Chinook helicopters on Tuesday citing a small number of engine fires caused by fuel leaks. The Army stated that the cause of the leaks has been identified and corrective measures are being implemented. A statement from Honeywell, the company that manufactures the Chinook’s T-55 engine, attributed the issue to “O-rings not meeting Honeywell design specifications [which] had been installed in some T55 engines during routine and scheduled maintenance at an Army Depot.”
This is a companion discussion topic for the original entry at https://www.avweb.com/aviation-news/military-aviation/u-s-army-grounds-chinook-fleet