On 5 December 2019, the first officer of a Cessna 208 on a scheduled Indonesian domestic passenger flight close to Timor-Leste became physically ill during normal unpressurised cruise at 10,000 feet during conversation about a family health issue. When he briefly lost consciousness, the captain declared a MAYDAY and diverted to Dili. The first officer recovered and when hospital checks were passed, the flight to the intended destination was completed. An in-depth medical investigation found no evidence of physical illness and concluded that unmanaged emotional stress had led to hyperventilation followed by a temporary incapacitation.