Complex sentence: One historic aircraft, a Grumman Widgeon which was formerly owned by singer Jimmy Buffett (then registered as N1471N) is housed in the main hangar and is now owned by Dennis K Burke who re-registered it as N3N.
Split into simpler sentences: One historic aircraft, a Grumman Widgeon formerly owned by singer Jimmy Buffett (then registered as N1471N), is housed in the main hangar. It is now owned by Dennis K. Burke, who re-registered it as N3N.