Definition
Shoulder-fired surface-to-air missile systems carried and launched by an individual on the ground, designed to engage low-altitude aircraft. Most use infrared (heat-seeking) guidance to track the heat signature of an aircraft's engines.
Plain English
A small, shoulder-launched missile that one person can carry and fire at a low-flying aircraft. It usually homes in on the heat from the aircraft's engines.
Context Anchor
Seen in aviation security briefings, route planning for higher-risk areas, and warnings about threats to low-flying aircraft.
Derivation
The name is descriptive: 'man-portable' means one person can carry it, and 'air-defense' refers to its purpose of defending against aircraft. The term was coined by military planners to distinguish these light, individual-soldier weapons from larger vehicle-mounted or fixed air-defense systems.
Why Pilots Care
Pilots must recognize the risk these systems pose during low-altitude flight in regions where they may be present.
Intuition Check
Do not read this as a general airport defense system. In aviation security use, it means a person-carried weapon intended to attack aircraft.
Example Sentence 1
Crews flying into airports in conflict-affected regions are briefed on the MANPADS threat and may be required to use steeper, higher approach profiles.
Example Sentence 2
Visual lookout for launch plumes helps pilots evade Man-Portable Air-Defense Systems during vulnerable phases of flight.