Yes, the second-in-command must have a type rating. On August 4, 2005, the FAA released a final rule that changed 14 CFR 61.55 "Second-in-command qualifications." The changed rule requires pilots who plan to fly outside U.S. airspace and land in foreign countries, and who are acting as second-in-command of an aircraft certificated for operations with a minimum flightcrew of at least two pilots, to obtain an appropriate pilot type rating. The rule established a new "SIC type rating" that will meet this requirement, and pilots must comply with this requirement no later than June 6, 2006. More information about the new SIC rule may be found on the NBAA web site at:
http://web.nbaa.org/public/ops/sic 