Definition
The minimum visibility, runway visual range, and/or ceiling values prescribed by regulation for landing a civil aircraft while operating under Instrument Flight Rules. These minimums are published for each instrument approach procedure and must be met for the pilot to descend below the decision altitude or minimum descent altitude and continue to a landing.
Plain English
The lowest weather conditions — how far you can see and how low the clouds are — that the rules allow you to land in when flying on instruments. If conditions are worse than these numbers, you cannot land from that approach.
Context Anchor
Seen on instrument approach charts and in weather planning before an IFR arrival.
Derivation
‘Minimums’ comes from the Latin minimus, meaning ‘smallest.’ In aviation, it refers to the smallest acceptable values of visibility and ceiling — the floor below which a landing is not permitted.
Why Pilots Care
Meeting these values keeps the approach legal and gives the pilot enough visual reference to land safely or execute a missed approach.
Grounding Statement
On an instrument approach, IFR Landing Minimums are the line between continuing toward the runway and stopping the descent because the required visual conditions are not there.
Intuition Check
Do not read “minimums” as a personal comfort level or a rough guideline. Here it means published limits that control whether the landing may continue.
Example Sentence 1
Before starting the approach, the pilot checked the IFR landing minimums and confirmed the reported visibility was above the required value.
Example Sentence 2
Because visibility dropped below the published IFR landing minimums, the crew flew the missed approach and diverted.