separation
sep-uh-RAY-shuhn
/ˌsep.əˈreɪ.ʃən/
The concept of keeping aircraft at a minimum distance apart to prevent collisions.
Refers specifically to maintaining required vertical or horizontal distance buffers between aircraft.
The story behind the word. From Latin 'separare', formed from 'se-' (apart) and 'parare' (to prepare). In aviation history, separation standards emerged in the 1930s as air traffic grew, establishing formal distance requirements.
Word relationships
- spacing: A general term for distance between items, whereas separation implies mandatory legal minimums.
- interval: Focuses on time or space gaps between successive aircraft.
- proximity: Closeness or lack of distance between aircraft.
Commonly confused with
- sequencing: Sequencing arranges aircraft in order; separation keeps them at safe distances apart.
Word family
- separate (verb): To keep distance between aircraft.
- separated (adjective): Kept at a mandatory distance.
Collocations
- maintain separation
- radar separation
- vertical separation
- loss of separation
- lateral separation
Example sentences
- "Air traffic controllers must maintain minimum radar separation of five miles between en-route commercial jetliners." ATC Operations
- "A loss of vertical separation occurred when the aircraft climbed five hundred feet above its assigned altitude." Incident Assessment
Memory hook
SEPARATE aircraft to prevent collisions. The safe distance buffer between planes.
When not to use
Do not use when discussing social or physical division of solid objects in aviation.
Fun facts
- Standard minimum vertical separation at high cruising altitude is typically 1,000 feet.
Related words
Explore more words
clearance, Airspace, distance, separatism, segregation, departure
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