The discovery of a debris field off Nantucket has shifted the search for a missing medical aircraft from a rescue operation toward an investigation into what went wrong aboard the six-person flight.

The Canadian-operated Gulfstream G100 disappeared early Saturday while traveling from Bermuda to Boston. Four Canadians and two Bermudian nationals were aboard, and the Coast Guard said their next of kin had been notified. A Coast Guard cutter was expected to continue searching overnight and into Sunday, even as crews prepared to examine the wreckage and surrounding waters. ¹

The official account remains cautious: the Coast Guard confirmed the debris but offered no cause, while the National Transportation Safety Board said it was gathering information without immediately announcing an investigation. Preliminary flight-tracking data, however, show the aircraft descending sharply from about 24,000 feet to roughly 10,000 feet before contact was lost.

Air-traffic recordings suggest the crew was struggling in deteriorating conditions. The pilot reportedly declared an emergency after reporting electrical problems, and a controller asked, “Roger, you said you’re coming in blind. Is that what you said?” ¹ The aircraft may also have been approaching a storm moving across its path.

That evidence has prompted a more specific interpretation from aviation attorney Mary Schiavo, a former Transportation Department inspector general. She said the plane may have lost its navigation instruments as the storm approached, warning that “it’s very easy to get disoriented and not know if you’re turning, climbing, descending, etc.” ¹

The contrast is significant: authorities are documenting the aircraft’s final movements without assigning blame, while Schiavo points to a possible chain linking electrical failure, instrument loss, severe weather and spatial disorientation. Until investigators recover more of the aircraft and establish the crew’s final actions, that explanation remains a hypothesis—not a finding.