Final answer:
The note indicates that aircraft westbound on V330 must cross OSITY intersection at or above 9500 feet MSL for safety and navigation purposes.
Step-by-step explanation:
The significance of the note regarding the OSITY intersection, found just east of the IDA VOR, is that it indicates a minimum crossing altitude (MCA) of 9500 MSL at this intersection.
Specifically, it applies to aircraft that are westbound on V330. This means if you are flying on V330 heading west and approaching OSITY intersection, you must ensure that your altitude is at least 9500 feet Mean Sea Level (MSL) by the time you reach OSITY.
This requirement ensures safe obstacle clearance and efficient navigation, as the Minimum Crossing Altitude at this point may be established due to factors such as terrain or man-made structures.
Pilots must adhere to this MCA to maintain the safety of their flight.