NTSB officials did not say how long the investigation would take, but accident investigations often take between one to two years to complete. Read more: https://www.kgw.com/article/news/nation-world/ntsb-investigates-deadly-plane-crash/507-30b7973c-c310-4b8f-8783-ece2d8654b04 Read more: https://www.kgw.com/article/news/nation-world/soldiers-bodies-recovered-deadly-plane-crash/507-2643f190-38b7-4de2-9f02-5d6bf3dba643 Subscribe: https://www.youtube.com/c/KGWNews8 Watch the latest KGW newscast: https://www.kgw.com/watch Get the KGW app: https://kgw.com/appredirect