Unruly or Unwell? Recognising Medical Deterioration in Flight | By Dr Jessica Okwesiwah ARTHUR
I took a stroll on Instagram in the dead of night and came across a video making waves. It was a setting I knew well: the cabin. Naturally, I went digging.
There is still a lot about this incident that remains inconclusive, so I will not pretend to have answers that the available evidence does not support. However, it does raise an important question from an aviation-medicine perspective:
When does apparently disruptive behaviour become a medical emergency?
The Kenya Airways incident
According to Kenya Airways, a passenger became unresponsive approximately 20 minutes before landing on 6 October 2026. The aircraft landed in Lagos at 21:41, where medical personnel subsequently confirmed that the passenger had died. The airline said its crew administered first aid and followed established emergency procedures.
Additional details were reported by Nigerian media citing the Nigeria Civil Aviation Authority (NCAA) and the Nigerian Police. NCAA Director of Public Affairs and Consumer Protection Michael Achimugu, as reported by The Sun Nigeria, said the passenger had reportedly become restless and aggressive, allegedly attempted to gain access to the cockpit and later tried to open the aircraft’s rear door before being restrained. He said the passenger’s hands were tied behind his back to prevent further disruption and protect those on board.
Separately, Airport Command police spokesperson Muhammed Adeola reported that the passenger was unable to breathe and that medical officers were alerted before landing (The Sun Nigeria, 2026). These reports describe important elements of the incident, but they do not establish the complete chronology or explain why the passenger behaved as he did. In particular, the available reporting does not establish the precise timing or relationship between the restraint and the reported breathing difficulties.
Answering those questions would require a proper investigation, including consideration of the passenger’s medical history, clinical observations, crew reports, the circumstances of the restraint and, where appropriate, post-mortem findings. That distinction matters because an unruly passenger may be a security problem, a medical problem, or both.
Unruly behaviour is not a diagnosis.
A passenger who is shouting, wandering around the cabin, attempting to access restricted areas or failing to follow crew instructions creates an immediate safety problem. Cabin crew must protect the passenger, other passengers, the crew and the aircraft.
Behaviour alone does not establish its cause. Agitation can occur with intoxication, psychiatric illness, acute anxiety, hypoglycaemia, neurological disease, head injury, delirium, respiratory compromise, cardiovascular disease and other acute medical conditions. A person experiencing physiological deterioration may initially present with confusion, fear, restlessness or unusual behaviour.
This creates a particular challenge in aviation. The priority may be to control the immediate safety threat. At the same time, the underlying cause of the behaviour cannot simply be assumed. The passenger may need to be managed as both a safety risk and a potentially unwell patient.
What happens to the body at cruise altitude?
The aircraft cabin is a very different physiological environment from the ground. Commercial aircraft commonly cruise at high altitudes, but the cabin is pressurised to a much lower equivalent altitude. Under US certification requirements for transport-category aircraft, cabin pressure altitude must not exceed 8,000 feet during normal operation (Federal Aviation Administration, 1998).
This means that the inspired partial pressure of oxygen is lower than at sea level. That does not mean that flying routinely causes dangerous hypoxia in healthy people. Nor does it mean that anxiety at altitude should automatically be attributed to hypoxia.
The relationship between altitude and anxiety is more complicated. A study by Roth et al. (2002) noted that symptoms associated with hypoxia at altitude, including breathlessness, palpitations and dizziness, can overlap considerably with symptoms experienced during panic attacks. However, they found that evidence that altitude exposure itself precipitates panic attacks or progressively increases anxiety was limited. This distinction is important.
A passenger experiencing sudden breathlessness, dizziness, palpitations and fear may genuinely believe something catastrophic is happening. Conversely, a passenger whose behaviour appears psychiatric may actually be developing a physiological emergency.
The appropriate response is therefore not to decide prematurely that the passenger is simply “panicking” or “being difficult.”
In-flight medical emergencies are uncommon, but they are real.
In-flight medical emergencies are relatively uncommon when considered against the enormous number of commercial airline passengers. Borges do Nascimento et al. (2021), in a systematic review and meta-analysis involving approximately 1.5 billion airline passengers, estimated an incidence of 18.2 in-flight medical emergencies per million passengers. They also estimated an all-cause mortality rate of 0.21 per million passengers, although the certainty of these estimates was limited.
The four most common diagnostic categories reported in their review were syncope, gastrointestinal, respiratory and neurological conditions. Martin-Gill et al. (2018) similarly identified syncope or near-syncope, gastrointestinal, respiratory and cardiovascular presentations among the most common in-flight medical emergencies. They estimated that approximately 4.4% of in-flight medical emergencies resulted in diversion to an alternative airport.
The 4.4% figure does not mean that any particular symptom automatically requires diversion. Rather, it illustrates that some in-flight medical events are serious enough that continuing the flight may not be the safest option. Diversion remains a clinical and operational decision based on the individual circumstances.
The importance of recognising deterioration
For cabin crew, one of the most important distinctions is between behavioural risk and medical deterioration. A passenger who is argumentative is not necessarily medically unwell. Nevertheless, sudden or unexplained changes in behaviour should prompt consideration of whether there has been a medical change. From an aviation-medicine perspective, features that should prompt consideration of medical assessment include:
- sudden alteration in behaviour or consciousness;
- confusion or disorientation;
- difficulty breathing or marked respiratory distress;
- collapse or near-collapse;
- seizure-like activity;
- severe or new chest pain;
- new neurological symptoms;
- marked deterioration in appearance or responsiveness; and
- deterioration in a passenger who has required physical restraint.
These are not a diagnostic checklist, and the presence or absence of any single feature cannot establish a diagnosis. They are prompts to reassess. The key principle is simple: Do not let the behavioural description become the diagnosis.
Restraint and the medical question
Physical restraint may be necessary when a passenger presents an immediate threat to the safety of the aircraft, crew or other passengers. It would therefore be inappropriate to suggest that restraint is inherently wrong or that every restrained passenger is being medically mishandled.
The legal framework surrounding aviation also recognises circumstances in which reasonable restraint may be used in managing unruly passengers (Opolot, 2026). However, once a passenger has been physically restrained, the need for continued observation does not disappear.
In this case, the NCAA spokesman reported that the passenger’s hands were tied behind his back after the reported attempts to access the cockpit and rear door. Separately, the Airport Command police spokesperson reported that the passenger was unable to breathe and that medical officers were alerted before landing (The Sun Nigeria, 2026). Those are important facts to investigate. They are not, however, evidence that restraint caused the breathing difficulty or the passenger’s subsequent death.
Establishing causation requires a proper investigation. Relevant questions include what happened before the behavioural disturbance, what interventions were undertaken, the nature and duration of any restraint, the passenger’s clinical condition afterwards, when breathing difficulties were first observed, what medical interventions were provided and what ultimately caused the death.
This is precisely why social-media footage cannot substitute for an aviation or medical investigation. A short video may show behaviour, but rarely tells us why it occurred.
What should happen when a passenger becomes medically concerning?
The response should be collaborative. Cabin crew have the immediate responsibility for managing the cabin environment and initiating the operator’s established emergency procedures.
Where a medically qualified passenger is available and willing to assist, that person may provide valuable support. However, their involvement should complement rather than replace the aircraft operator’s established medical and operational system.
Martin-Gill et al. (2018) describe the role of medical volunteers in assessing passengers and communicating relevant findings to the flight crew and ground-based medical support. Ground-based medical advice can then contribute to decisions about treatment and whether diversion should be considered.
This is important because an aircraft does not have the resources of an emergency department. The decision-makers may have to work with a limited history, clinical observations, available equipment and the trajectory of the passenger’s condition.
The central operational question becomes: Is this passenger safe to continue the flight, or is the risk of continuing greater than the consequences of diverting? That is a medical and operational decision, not simply a disciplinary one.
What does ICAO require?
The international regulatory framework already recognises the challenge posed by unruly and disruptive passengers. The current 17th edition of ICAO Annex 9, Facilitation, published in March 2025, contains Standards that address the prevention and management of unruly and disruptive passenger behaviour (International Civil Aviation Organisation, 2025).
Standard 6.35 requires each Contracting State, in cooperation with airport and aircraft operators, to promote passenger awareness of the unacceptability and potential legal consequences of unruly or disruptive behaviour at airports and on board aircraft (International Civil Aviation Organisation, 2025).
Standard 6.36 requires each Contracting State, in cooperation with airport and aircraft operators, to ensure that relevant personnel are trained to identify and manage unruly and disruptive passenger situations (International Civil Aviation Organisation, 2025). Material presented at ICAO’s 2026 International Air Law Treaty Workshop reproduces both provisions and identifies the training requirement as Annex 9 Standard 6.36 (Opolot, 2026).
The wording is important. The framework is not simply about what to do after a passenger becomes disruptive. It also refers to identification and management. ICAO’s requirement does not turn cabin crew into clinicians, nor does it establish a diagnostic protocol for medical emergencies. However, it does create an important interface between aviation safety, security and medicine.
From an aviation-medicine perspective, such training could also incorporate awareness of situations in which unusual behaviour may have a medical component. The objective is not to medicalise every difficult passenger. It is to avoid overlooking the passenger who is becoming medically unwell.
The African aviation context
For African aviation systems, this distinction deserves particular attention. Aeromedical resources, emergency medical systems and specialist aviation medicine capacity vary across countries and airports. An aircraft may also be operating across several jurisdictions before reaching an airport with the medical resources required to manage a seriously ill passenger.
In regions where aeromedical capacity and access to specialist aviation medicine may vary considerably between States, recognising deterioration early becomes particularly important. This makes prevention, early recognition and communication particularly important.
The answer is not necessarily more restrictive passenger-control measures. Nor is it to treat every behavioural disturbance as a medical emergency. It is to build systems in which security and medical assessment can operate in tandem. A passenger attempting to enter the cockpit cannot simply be allowed to continue, even if the behaviour might have a medical explanation. Equally, once the immediate safety threat has been controlled, the possibility of an underlying illness should not be ruled out.
The two questions can coexist:
- How do we keep everyone else safe?
- Furthermore, what is happening medically to this passenger?
What can passengers do?
Passengers also have a role. If you experience sudden severe anxiety, breathlessness, chest discomfort, dizziness, confusion or another significant change in your physical or mental state during a flight, tell a crew member early.
If another passenger appears acutely unwell, alert the cabin crew rather than attempting to manage a serious situation independently.
If you are medically trained and willing to assist, identify yourself to the crew and allow them to coordinate your involvement.
If another passenger appears distressed or confused, avoid confrontation, crowding or provoking the individual. Cabin crew should be allowed to manage the situation.
The bigger lesson
The Kenya Airways incident should not be used to make a retrospective diagnosis of the passenger. Nor should it be reduced to a story about an “aggressive passenger who died.”
Reports concerning the incident describe several elements, including behavioural disturbance, alleged attempts to access restricted areas, reported restraint with the passenger’s hands tied behind his back, reported breathing difficulties before landing, subsequent unresponsiveness and death after landing.
The precise timing and relationship between these events remain matters for investigation. However, the incident raises a broader question in aviation medicine that extends beyond this particular flight.
An unruly passenger may be a security problem. An unruly passenger may be a medical problem. Sometimes, the same passenger may be both. Aviation safety systems should therefore be designed to manage the behavioural threat without losing sight of the patient behind the behaviour.
At cruising altitude, there may be no emergency department down the corridor; however, there are the cabin crew, available medical equipment, possibly a medically qualified passenger who can assist, ground-based medical support, and the clinical and operational decisions made by the
flight crew. Recognising the difference between disruption and deterioration may therefore be more than a matter of good customer service. It may be a matter of life and death.
References
Borges do Nascimento, I. J., Jerončić, A., Arantes, A. J. R., Brady, W. J., Guimarães, N. S., Antunes, N. S., Carim Junior, G., & Marcolino, M. S. (2021). The global incidence of in-flight medical emergencies: A systematic review and meta-analysis of approximately 1.5 billion airline passengers. American Journal of Emergency Medicine, 48, 156–164. https://doi.org/10.1016/j.ajem.2021.04.010
Channels Television. (October 7, 2026). Passenger dies after “medical emergency” on Kenya Airways flight to Lagos. Channels Television
Federal Aviation Administration. (1998). Advisory Circular AC 25-7A: Flight test guide for certification of transport category aeroplanes.
International Civil Aviation Organisation. (2025). Annex 9 to the Convention on International Civil Aviation: Facilitation (17th ed.).
Martin-Gill, C., Doyle, T. J., & Yealy, D. M. (2018). In-flight medical emergencies: A review. JAMA, 320(24), 2580–2590. https://doi.org/10.1001/jama.2018.19842
Opolot, A. P. (2026). Session 4: MP 14: Protocol to amend the Convention on Offences and Certain Other Acts Committed on Board Aircraft (Montréal, 2014) [Workshop presentation]. International Air Law Treaty Workshop, Dar es Salaam, Tanzania.
Roth, W. T., Gomolla, A., Meuret, A. E., Alpers, G. W., Handke, E. M., & Wilhelm, F. H. (2002). High altitudes, anxiety, and panic attacks: Is there a relationship? Depression and Anxiety, 16(2), 51–58. https://doi.org/10.1002/da.10059
The Sun Nigeria. (October 7, 2026). Lagos-bound passenger dies on board Kenya Airways flight.
About the author: Dr. (Med) Jessica Okwesiwah ARTHUR is a medical doctor and also holds a masters degree in aerospace medicine.
