Coast Guard aircraft, boats and a cutter were searching waters south of the Massachusetts island after controllers lost contact with the jet.
NANTUCKET, Mass. — The U.S. Coast Guard launched an air and sea search Saturday for a medical jet carrying six people that disappeared from contact with air traffic controllers while flying from Bermuda to Boston, federal authorities said.
The Federal Aviation Administration lost contact with the Gulfstream G100 early Oct. 3 and issued a Search and Rescue Alert Notice, according to the FAA and Coast Guard. The aircraft, identified by registration C-GRJP, was headed to Boston Logan International Airport when communication was lost. Search crews focused on Atlantic waters south of Nantucket.
The FAA said the aircraft departed L.F. Wade International Airport in Bermuda and was carrying six people. The agency said it issued its search and rescue alert at about 1:20 a.m. and was coordinating with the Rescue Coordination Center and the Coast Guard. Officials had not publicly identified the people aboard as of Saturday morning.
The Coast Guard said the FAA notified its command center at about 2 a.m. that contact with the aircraft had been lost. Crews sent to the area included an HC-144 aircraft and an MH-60 helicopter from Air Station Cape Cod, a 47-foot motor lifeboat from Station Brant Point on Nantucket and the USCGC William Sparling, a Fast Response Cutter. Additional Coast Guard aircraft also joined the search, according to local reporting.
The Nantucket Current reported that the search was underway about 13 nautical miles south of the island Saturday morning. Coast Guard Station Brant Point personnel were among the crews operating in the search area. Authorities had not announced finding the aircraft, debris or any of the six people aboard when the initial search updates were released.
Flight-tracking data cited by several news organizations showed that the aircraft left Bermuda late Friday and was scheduled to arrive in Boston early Saturday. The tracking information indicated the jet rapidly descended from roughly 24,000 feet to about 11,000 feet before its signal disappeared. Those tracking records alone do not establish what happened to the aircraft, and federal authorities had not announced that it had crashed.
The aircraft has been described by news organizations as a medical transport or air ambulance jet. Registration information cited by CBS News linked the plane to Latitude Air Ambulance. Authorities had not publicly said whether a patient was aboard or released details about the roles or identities of the six occupants.
The Gulfstream G100 is a twin-engine business jet that can also be configured for specialized operations, including medical transport. Investigators had not announced any mechanical problem, emergency call, weather-related cause or other explanation for the loss of contact. No official cause could be established while the aircraft remained missing.
The search was centered off Nantucket, an island roughly 30 miles south of Cape Cod. Aircraft and surface crews continued sweeping the area Saturday as officials worked to determine the jet’s last known position and locate possible signs of the aircraft. The Coast Guard said it would release further information as the operation developed.
As of the latest publicly available updates Saturday, the six people remained unaccounted for and the search was continuing. The FAA and Coast Guard were coordinating the response, while authorities had not released the occupants’ identities or confirmed what caused contact with the Boston-bound aircraft to end.
Author note: Last updated October 3, 2026.