What are the two basic categories of aviation threats?

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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The air cargo system is vulnerable to several security threats including potential plots to place explosives aboard aircraft; illegal shipments of hazardous materials; criminal activities such as smuggling and theft; and potential hijackings and sabotage by persons with access to aircraft.

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Hazard: A condition or an object with the potential to cause or contribute to an aircraft incident or accident. Important: a hazard is not an event in itself, but a prerequisite for the occurrence of a hazardous (top) event. Threat: Anything that might exploit a vulnerability.

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Levels of Threat. Level 1 — Disruptive behavior (verbal); Level 2 — Physically abusive behavior; Level 3 — Life-threatening behavior (or display of a weapon); Level 4 — Attempted or actual breach of the flight crew compartment.

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Category A: less than 169 km/h (91 kt) indicated airspeed (IAS) Category B: 169 km/h (91 kt) or more but less than 224 km/h (121 kt) IAS. Category C: 224 km/h (121 kt) or more but less than 261 km/h (141 kt) IAS. Category D: 261 km/h (141 kt) or more but less than 307 km/h (166 kt) IAS.

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