US Coast Guard ends Nantucket air ambulance search as six aboard are presumed dead

The US Coast Guard has suspended its search for six people aboard a medical transport jet that crashed into the Atlantic Ocean south of Nantucket, Massachusetts, after departing Bermuda for Boston on October 3. The Gulfstream G100, operated by Canadian company Latitude Air Ambulance, was carrying a patient, a family escort and four crew members when the aircraft developed electrical problems, descended sharply and disappeared from radar before reaching Boston Logan International Airport. Search crews later located debris confirmed to be from the aircraft, and the operator says everyone aboard is now presumed dead.

The Coast Guard ended the search after approximately 66 hours of operations covering more than 4,400 square miles of ocean using aircraft, helicopters, cutters and other vessels. The decision marked the transition from an urgent search-and-rescue mission toward recovery and accident investigation after crews were unable to locate survivors. Canadian and US transportation investigators are now preparing to examine what happened during the aircraft’s final minutes.

Two of the people aboard have been identified as Bermudian nationals Marilyn Lavonne Bean, 66, and her son Sergio Wayne Lottimore, 41. Bean was reportedly being transported to Boston for medical treatment after suffering a stroke, while Lottimore was accompanying her during the journey. Four Canadian crew members, including two pilots and two medical personnel, were also aboard the air ambulance.

Electrical problems and a sudden descent are central to the investigation into the crash

The aircraft had been cruising at roughly 24,000 feet for more than an hour as it approached the northeastern United States when the crew began reporting electrical difficulties. Air traffic recordings indicate communication with controllers became increasingly difficult, with transmissions from the aircraft weakened as the situation deteriorated. Controllers attempted to determine whether the pilots were declaring an emergency while continuing to guide the jet toward the Boston area.

Flight-tracking data show the aircraft then descended approximately 13,000 feet within only a few minutes. That rapid drop occurred before radar and radio contact were lost entirely, prompting the Federal Aviation Administration to issue a search-and-rescue alert. Emergency crews at Boston Logan had initially been told to prepare for the aircraft’s arrival before authorities realized it would not reach the airport.

The electrical problems are likely to receive significant attention from investigators because modern aircraft depend heavily on electrical power for instruments, communications and navigation systems. A serious failure can make flying considerably more difficult, particularly at night or in poor weather when pilots may have limited visual references outside the cockpit. Investigators have not yet concluded that an electrical malfunction caused the crash, and multiple possibilities remain under review.

Search crews located aircraft debris but found no sign of the six people aboard

The Coast Guard launched a large search across waters south of Nantucket after the jet disappeared. Aircraft, helicopters and vessels searched continuously while other agencies supported the effort with tracking information and maritime resources. A debris field discovered about 20 miles south of Nantucket was later confirmed to contain material from the missing Gulfstream.

Finding the wreckage narrowed the probable crash location but did not immediately lead crews to the occupants. Search teams continued operating for another extended period because survival can sometimes remain possible after an aircraft enters the ocean, particularly if flotation equipment or life rafts are deployed. As the hours passed without any sign of survivors, however, the probability of a successful rescue declined significantly.

Rear Admiral Matthew Lake, commander of the Coast Guard’s Northeast District, said suspending a search is never an easy decision and expressed condolences to the families and loved ones of those aboard. Latitude Air Ambulance subsequently acknowledged what it described as the heartbreaking reality that its four employees, the patient and the patient’s family escort were presumed to have died.

Bermuda identifies a mother and son who were traveling to Boston for medical care

Bermuda Police identified the two passengers as Bean and Lottimore, providing the first public details about the people at the center of the medical flight. Bean had reportedly suffered a stroke and was being transported from Bermuda to Boston for medical treatment unavailable locally, a routine reason air ambulance operators undertake long-distance international flights. Her son joined her as the designated family escort.

Lottimore was a well-known Bermudian business professional and had served as a senior vice president at insurance company Hamilton Re. His former school, Warwick Academy, remembered him as a distinguished alumnus, while Bermuda officials expressed condolences to the family and wider community. The tragedy has resonated particularly strongly in Bermuda because overseas medical transfers are an important part of healthcare access for residents requiring specialized treatment.

Bermuda Premier David Burt said the territory’s government had remained in contact with US authorities and the victims’ families throughout the search. The loss therefore involves multiple countries simultaneously: Bermudian passengers, Canadian crew members, a Canadian aircraft operator and a crash site within the United States’ maritime search-and-rescue region.

Canada will lead the air accident investigation with support from US authorities

Canada’s Transportation Safety Board will lead the formal accident investigation because the Gulfstream G100 was registered in Canada. The US National Transportation Safety Board will participate as an accredited representative because the aircraft went down near Massachusetts and significant recovery operations will occur in US waters. Other agencies, including aviation authorities and the aircraft operator, are also expected to provide records and technical assistance.

Investigators will attempt to recover as much of the aircraft as possible from the ocean floor, including the cockpit voice recorder and flight data recorder if they can be located. Those devices could provide crucial information about cockpit conversations, instrument warnings, aircraft performance and the exact sequence leading to the rapid descent. Investigators will also review maintenance records, crew qualifications, weather data and the jet’s electrical systems.

The recovery phase may prove difficult because parts of the wreckage are believed to be underwater rather than floating on the surface. Sonar and remotely operated equipment could be needed to locate larger sections of the aircraft, depending on water depth and sea conditions. A final determination of probable cause could therefore take months rather than days.

Poor weather may become another focus but investigators warn against early conclusions

Weather conditions in the region were unsettled around the time of the crash, creating another factor investigators are expected to examine closely. Air traffic recordings indicate the crew may have been dealing with reduced visibility while simultaneously experiencing electrical and communications problems. A combination of instrument failure and poor visibility can dramatically increase pilot workload because the crew must maintain control without relying on external visual references.

Aviation experts have cautioned against assuming the weather or electrical issue was independently responsible for the accident. Major crashes frequently involve several events occurring in sequence, such as an equipment malfunction followed by increasing workload, communication problems and difficulty maintaining situational awareness. Investigators will need technical evidence before determining whether that type of chain occurred here.

The Gulfstream G100 is a twin-engine business jet commonly used for corporate transportation and specialized missions such as medical evacuation. Its use as an air ambulance requires additional medical equipment and staff but does not fundamentally change the aircraft’s flight systems. Investigators will therefore examine both normal aviation factors and anything specific to the medical configuration of the aircraft.

Air ambulance flights operate under difficult conditions because medical missions cannot always wait

The crash also highlights the demanding environment faced by medical transport crews. Air ambulances often fly patients who require specialized care unavailable where they are located, creating pressure to complete missions that may involve long distances, overnight operations and rapidly changing weather. Operators must balance the urgency of a patient’s medical needs with the same aviation safety considerations that apply to any other flight.

These flights commonly carry two pilots alongside medical personnel trained to monitor patients during transport. The crews may operate between countries and unfamiliar airports while coordinating with hospitals, ground ambulances and immigration authorities. Although air ambulance accidents remain relatively uncommon, the consequences can be especially severe because the aircraft may carry medically vulnerable passengers.

Latitude Air Ambulance said the Nantucket accident was the first incident in which the company had lost contact with one of its aircraft. The Ontario-based company operates international medical repatriation flights and has pledged full cooperation with Canadian and US investigators as they reconstruct the accident.

Recovery efforts could provide the evidence needed to explain the jet’s final minutes

The immediate priority has now shifted from finding survivors to recovering evidence from the crash site. Investigators will attempt to map the debris field, identify the distribution of wreckage and recover components that could reveal whether the aircraft broke apart before impact or remained largely intact until reaching the water. Damage to electrical panels, generators, cockpit instruments and wiring could become especially important given the crew’s reported problems.

Maintenance records will also be reviewed to determine whether the aircraft had experienced recent electrical faults or other technical issues. Investigators routinely examine inspection histories, previous repairs and component replacements when evaluating an accident. Crew schedules and medical information may also be reviewed to rule out fatigue or other human factors.

The investigation is likely to take considerable time because technical conclusions must be supported by physical and recorded evidence. Early information strongly establishes that the crew experienced difficulties and that the aircraft descended rapidly, but it does not yet explain why those problems became unrecoverable. Aviation authorities generally avoid assigning blame until the entire chain of events has been reconstructed.

The Nantucket crash leaves three countries grieving while investigators search for answers

The loss has affected communities in Bermuda, Canada and the United States, reflecting the international nature of medical aviation. For Bean and Lottimore’s family, what began as an effort to reach specialized medical treatment in Boston ended in tragedy over the Atlantic. For Latitude Air Ambulance, the crash represents the loss of four colleagues who were carrying out a medical mission.

The suspension of the Coast Guard search also marks an emotionally difficult turning point for relatives because hopes of rescue have now given way to recovery and investigation. Officials in Bermuda and Canada have emphasized support for affected families while thanking US search crews for the extensive operation conducted around Nantucket.

Attention will now move toward understanding the aircraft’s electrical problems, identifying the effect of weather and recovering the flight recorders if possible. Those answers will not change the outcome for the six people aboard, but they could help determine whether technical, operational or procedural changes are needed to prevent a similar accident in the future.

Key takeaways from the Nantucket air ambulance crash and suspended US search

• The US Coast Guard has suspended its search for six people aboard a medical transport jet that crashed south of Nantucket while flying from Bermuda to Boston.
• The aircraft was a Canadian-registered Gulfstream G100 operated by Latitude Air Ambulance and carried a patient, family escort and four Canadian crew members.
• Flight recordings indicate the crew reported electrical problems before the aircraft rapidly lost thousands of feet of altitude and disappeared from radar.
• Search teams covered more than 4,400 square miles over approximately 66 hours and located a debris field confirmed to belong to the missing aircraft.
• Bermudian passengers Marilyn Lavonne Bean, 66, and her son Sergio Wayne Lottimore, 41, have been publicly identified among the six people presumed dead.
• Canada’s Transportation Safety Board will lead the formal investigation, with the US National Transportation Safety Board participating in the inquiry.
• Investigators will examine electrical systems, weather, maintenance records, crew actions and recovered wreckage before determining the probable cause.
• The focus has now shifted from rescue to recovery as authorities work to locate flight recorders and reconstruct the aircraft’s final minutes.