Definition
An instrument approach chart title indicating the second distinct ILS (Instrument Landing System) procedure published for Runway 28 at a given airport. The number '2' is a sequencing identifier used when more than one approach of the same type serves the same runway, typically because the procedures differ in some operationally significant way such as required equipment, minimums, missed approach, or feeder routes.
Plain English
This is the second of two ILS approaches that both lead to Runway 28 at the same airport. The '2' is just a label to tell them apart on the chart.
Context Anchor
Seen at the top of an instrument approach chart and heard when a controller clears a pilot for that exact approach.
Derivation
When an airport has more than one approach of the same type to the same runway, the FAA distinguishes them by adding a numeric suffix (1, 2, Z, Y, etc.). The number is purely an identifier, not a category or difficulty rating.
Why Pilots Care
Distinguishes between multiple ILS procedures to the same runway so the pilot selects and briefs the correct one.
Intuition Check
Do not read the 2 as part of the runway number. ILS 2 RWY 28 means ILS procedure number 2 for runway 28, not an approach to runway 2.
Example Sentence 1
Approach cleared us for the ILS 2 RWY 28, so we made sure to brief that specific chart and not the standard ILS RWY 28.
Example Sentence 2
ATC issued a clearance for the ILS 2 RWY 28 when the first ILS was temporarily out of service.