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Related to terminal guidance: midcourse guidance
terminal guidance[′tər·mən·əl ¦gīd·əns]
Guidance of a craft from an arbitrary point, at which midcourse guidance ends, to the destination.
ii. Visual, electronic, mechanical, or other assistance given to an aircraft pilot to facilitate arrival at, operation within or over, landing upon, or departure from an air-landing or airdrop facility.