What is the greatest hazard to aircraft?

SQUALL LINES It often contains severe steady-state thunderstorms and presents the single most intense weather hazard to aircraft. It usually forms rapidly, generally reaching maximum intensity during the late afternoon and the first few hours of darkness.



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Due to the enormous energy it releases and the accompanying meteorological phenomena, a thunderstorm is considered to be the most dangerous meteorological phenomenon for aviation.

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Here are the 4 types of operational risk for airline SMS.
  • 1 - Loss of Control in Flight (LOC-I) Fortunately, loss of control in flight is relatively rare occurrence in aviation SMS. ...
  • 2 - Runway Safety. ...
  • 3 - Fatigue Risk Management. ...
  • 4 - Controlled Flight into Terrain (CFIT)


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Thunderstorms produce the most severe weather you can find in aviation. And you don't need to be in a thunderstorm to be in trouble. Thunderstorms can launch hail out of themselves up to 20 miles away. Strong downdrafts and microbursts can form underneath them.

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All thunderstorms can produce severe turbulence, low level wind shear, low ceilings and visibilities, hail and lightning. Each of these hazards can be difficult to cope with; if all these conditions arrive at once, it can be disastrous.

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Flights operating in the vicinity of airspace with conflict zones. Lone-wolf and terrorism incidents compromising security. Human trafficking, inadequately documented passengers, contraband smuggling are other causes for concern due to their various degrees of risk.

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Accidents. Accidents such as falls, slips and trips remain some of the most common hazards for ground handlers. Electrocution, vehicle accidents, falling objects, the risk of fires and explosions, and working with inadequate lightning can also lead to serious accidents.

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The 'Significant Seven' covers: loss of control, runway overrun or excursion, controlled flight into terrain, runway incursion and ground collision, ground handling and airborne and post-crash fire.

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Threats can be classified into two groups, overt (active) or latent threats; Latent Threat – Not obvious to the flight crew and generally hidden within the system. Overt Threats – Are present on the day and are either anticipated or unexpected by the crew.

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