G650 diverted for chest pain that wasn’t cardiac. Would an ECG help?

Medical incidents inflight are always an operational risk, especially on long-haul flights and in business aviation. It is important that first aid kits and diagnostic tools are available onboard that can help a ground-based physician rule out serious and life-threatening conditions. Without them, a pilot may have no alternative but to divert.A Gulfstream G650 was flying a long-haul route and had to divert after a senior executive suffered chest pains, according to a MedAire case study published in May 2025. The symptoms were those of a possible heart attack: tightness in the chest, shortness of breath, and discomfort radiating to the left shoulder.The crew contacted MedAire's MedLink and described the symptoms. The aircraft did not have an ECG or similar equipment, so the physician on the ground could not confirm or rule out a cardiac event. Using the physician's guidance, the pilot in command chose to divert to the nearest suitable airport with medical facilities so that the passenger could be evaluated further. The crew offered assistance as best they could using the aircraft's Advanced Aviation Medical Kit. Under MedLink's guidance, they gave the passenger oxygen and monitored them during the descent.After evaluation, the passenger was found to have non-cardiac chest pain, which MedAire's report attributes to likely gastrointestinal irritation or anxiety.Without an ECG or a digital assessment kit, the physician could not determine whether the condition was non-critical or cardiac. The diversion caused operational disruption: passengers were delayed, duty limits were reached, and the unplanned itinerary change created logistical challenges. The aircraft was grounded for over 12 hours.The unplanned costs to the operator caused by the diversion included landing, parking, ground handling and medical costs. The situation caused anxiety and uncertainty for all those onboard, although the crew were calm, vigilant and communicative throughout.How flight departments can prepare for a medical eventA medical emergency is a high-stakes inflight event, and operators need to make confident and informed decisions, especially in remote areas. The health and safety of the passenger is a top priority. Operators should invest in the appropriate tools to add peace of mind for all onboard.MedAire's account of the G650 case says a Digital Assessment Kit could have let the crew send ECG and vital sign data to the MedLink physician in real time, which could likely have ruled out a serious cardiac event and allowed the flight to continue.NBAA's Business Aviation Insider has collected advice from flight department managers and medical experts on planning for an inflight medical emergency before a flight departs. Flight departments should have a standard operating procedure for a medical emergency. An emergency response plan should be in place as well as an incident management plan. Scenarios should be practiced and can show inconsistencies in checklists, so are worth looking at. Familiarization with the equipment onboard at regular intervals is essential. In a medical emergency, rapid communication is essential. One department NBAA profiled requires every crew member to hold CPR, AED and First Aid certification.What the FAA requires, and what it doesn'tThe FAA requires specific medical training for flight attendants on Part 121 flights (airlines). An airline cannot operate a passenger airplane without the emergency medical equipment listed in 14 CFR 121.803. Flight attendants must train on the use of automated external defibrillators (AEDs) and in cardiopulmonary resuscitation at least once every 24 months. Mandatory equipment onboard includes approved first-aid kits and, on airplanes that require a flight attendant, an approved emergency medical kit. An AED is required on those airplanes if their maximum payload capacity is more than 7,500 pounds.These regulations do not apply to flights under Part 91 (private jets) or 135 (charter and on-demand operators). The only medical equipment Part 91 requires is a first aid kit, on large airplanes and turbojet-powered multiengine airplanes (14 CFR 91.513). Part 135 requires one on aircraft with more than 19 passenger seats (14 CFR 135.177). Neither section lists an AED or an emergency medical kit.If an operator provides additional equipment, such as a digital assessment kit, on its aircraft, the crew should also be trained to use it, even if the FAA does not require the equipment onboard.What operators need to knowMedical emergencies in the air are rare, which makes it easy for flight departments to defer carrying anything beyond the required minimum. The G650 case is MedAire's argument for carrying an ECG. It's a product MedAire markets, so it has an incentive to make the case. But it's a strong argument, nonetheless. The question for operators is both a safety and cost challenge: if a medical emergency happens on their next long-haul flight, will the crew have anything to share with ground-based medical personnel beyond a verbal description of the symptoms?