He joined NBC News in 1985 as a producer based in Cyprus, covering tensions in the Middle East for the US network. Following the 1990 Iraqi invasion of Kuwait, Aspell went to Baghdad as an on air correspondent.
As a foreign correspondent Aspell covered events from the Bosnian War to the overthrow of Saddam Hussein.
"From Southeast Asia to the Middle East ... to the Balkans ... to Afghanistan, Iraq, Iran and dozens of other 'hot spots,' Aspell made his mark on behalf of NBC News for 28 years," NBC News President Steve Capus said in a statement.
"To a person, all of his colleagues will tell you Tom was great company in the field who loved sharing stories at the end of a day spent documenting history."
Awards won by Aspell for his work include the National Press Photographers' Association Award in 1979 for coverage of the Iranian Revolution, an Emmy for coverage of the Romanian Revolution in 1989, and the National Headliner Award for coverage of Yugoslavia in 1993.
NBC anchor Brian Williams described Aspell as displaying "an intense brand of cool under fire", NBC reported.
NBC chief foreign correspondent Richard Engle paid tribute to his colleague on Twitter.
"We miss you Tom. Knowledgeable, brave, fun, kind. Tom Aspell did important work and left us far too soon," he wrote.
The New Zealander's final posting for NBC News was in Cyprus, where he enjoyed spending time on his sailboat, NBC reported.
He leaves behind his wife Nujud Dabbagh and their two sons, Peter and Gary.
- nzherald.co.nz