A flight of Korean Air Co., South Korea's leading air carrier, from Tokyo to Incheon experienced a delay of over four hours Wednesday due to the flight captain's health issue, according to company officials.Korean Air flight KE706, which was scheduled to depart from Narita International Airport at 9:20 a.m. with 283 passengers, encountered a problem with the captain's health while preparing for departure.It was reported that the captain complained of dizziness and other symptoms.The captain was sent to the airport's emergency medical team for treatment. It was reported that the condition was not life-threatening.Korean Air dispatched a replacement personnel team from Incheon to Tokyo. The company said it informed the passengers about the delay and provided meal vouchers.Source: Yonhap News Agency