The White House released a report on the impact and cost of the October 2013 federal government shutdown, estimating costs anywhere from $2- to $6 billion in lost output for the overall economy.
Among the hardest hit by the 16-day furlough of non-exempt government employees was general aviation. The move closed the FAA Registry office and delayed other certification activities, imposing widespread hardship on general aviation manufacturers. The Registry must approve each certificate of registration that is required for the sale, export and import of an aircraft.
The Registry also manages all legal filings required for an aircraft transaction, including those tied to obtaining financing. As a result, the shutdown delayed deliveries of more than 150 newly manufactured airplanes with a total value of at least $1.9 billion.
http://www.ainonline.com/aviation-news/aviation-international-news/2013-12-03/white-house-outlines-shutdown-costs