The King County Medical Examiner’s office has identified the passenger who died after falling ill aboard a United Airlines flight from Tokyo to Denver on Tuesday, Sept. 29, 2026, as Felmo M. Penola, 71, and ruled his death natural.
A list of decedents dated Sept. 30 included Penola, and the office attributed his death to hypertensive and atherosclerotic cardiovascular disease. That is heart disease tied to high blood pressure and to arteries that have hardened and narrowed. He was traveling with his family.
United Flight 142, a Boeing 787-9 Dreamliner, left Tokyo’s Narita International Airport bound for Denver on a trip of about 10 and a half hours, carrying 245 passengers and 12 crew members. About six and a half hours into the flight, the man’s skin turned “deep purple” and he stopped responding, a witness said.
Diversion to Seattle
The crew reported an onboard medical emergency, according to the Federal Aviation Administration. The emergency forced the aircraft off route, and it diverted to Seattle-Tacoma International Airport, the nearest airport. The plane landed in Seattle at about 8:35 a.m. local time, and paramedics met the aircraft.
A witness said a commotion near her seat woke her. The sight that greeted her shocked her: an unconscious man on the floor, with a flight attendant and three firefighters working over him. She said she approached a flight attendant and was told the plane would make an emergency landing at the nearest airport, Seattle-Tacoma International. She said the pilot stepped out of the cockpit at one point to assess the situation, and that she overheard one flight attendant tell another the plane was 45 minutes from landing in Seattle.
The three firefighters were traveling as passengers. Oxygen through a mask and intravenous fluids were what they gave the man as the widebody swung toward Seattle and began its descent. One of the firefighters hooked his arm through the man’s once the jet was down and pulled him along the aisle and off the plane, the witness said.
“Unfortunately, the person did not survive and was turned over [to] the King County Medical Examiner,” a spokesperson for the Port of Seattle, which runs the airport, told People.
Medical personnel met the aircraft, United said in confirming the diversion, but the airline released no further details about the passenger. The flight later continued on to Denver.
How Often Emergencies Happen
The Centers for Disease Control and Prevention puts the rate of medical emergencies at about 1 of every 604 commercial flights, with about 0.3 percent of those emergencies ending in death. Roughly 90 percent of flights that have an emergency still reach their destination. Most diversions trace back to cardiac events, chest pain, obstetric complications and possible strokes.
University of Virginia researchers put cardiac arrest at only 0.3 percent of in-flight medical events, yet it causes 86 percent of the deaths, they wrote in a 2015 review in the New England Journal of Medicine.
What Airlines Must Carry
A 2001 FAA rule requires U.S. airlines to carry an automated external defibrillator and requires flight attendants to be trained in CPR and defibrillator use. Planes carry an emergency medical kit stocked with drugs such as epinephrine and aspirin, plus oxygen equipment. Ground-based medical services advise airlines on whether a flight should divert, though the pilot makes the final call, the CDC says.
Medical professionals who volunteer to help in good faith are shielded from liability by the 1998 Aviation Medical Assistance Act, except in cases of gross negligence or willful misconduct.
Regulators are reviewing the rules for medical kit contents. The FAA proposed on Aug. 5 to swap the current list of 64 required items for a performance-based standard that would have airlines equip kits for nine life-threatening conditions, among them cardiac emergencies, breathing emergencies, sudden loss of consciousness and opioid overdose. Defibrillator requirements would stay unchanged under the proposal, and public comments are due Oct. 5.
