Definition
The category of flight operations in which a pilot transitions from en route or terminal flight to a landing at an airport by following a published instrument procedure, using onboard instruments and navigation guidance rather than visual reference to the ground. These operations are conducted under instrument flight rules and follow charted procedures that specify routes, altitudes, course guidance, and minimum visibility and altitude requirements down to a point where the pilot must either see the runway environment and land, or execute a missed approach.
Plain English
Flying an approach to a runway by following instruments and a published procedure, instead of by looking out the window. The procedure tells the pilot exactly where to fly, how low to descend, and what to do if the runway isn't visible at the bottom.
Context Anchor
Seen in IFR flight, approach clearances, weather-minimum discussions, and published approach procedures.
Derivation
Instrument comes from an older word meaning a tool or device. Approach means to come nearer. Operations means actions being carried out. Together, the term points to the actions used to come near an airport by relying on flight instruments and published procedure guidance.
Why Pilots Care
These operations allow safe landings when weather hides the airport, directly affecting whether a flight can complete its mission or must divert.
Grounding Statement
Picture an aircraft descending toward an airport in cloud: the pilot is not guessing where the runway is, but following a published path until there is enough visual reference to land.
Intuition Check
Do not read “instrument approach operations” as just any flying while looking at instruments. Here it means using an approved instrument approach procedure to get from the arrival phase to a possible landing.
Example Sentence 1
The crew briefed the instrument approach operation, including the decision altitude and missed approach procedure, before beginning the descent.
Example Sentence 2
Fog forced the airport to handle only instrument approach operations for the next two hours.