Commercial Fixed Wing
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 172; Flight Crew Total 13790; Flight Crew Type 6539
Troubleshooting; Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Chart Or Publication
We as a crew reviewed the [approach] pages for the Missoula airport and decided to build both visual approaches to runway 30 and12 in the primary and secondary FMGC Flight Plans.Upon receiving the ATIS; we determined runway 12 was in use and decided we would most likely get the ILS approach; due to a 9000 foot overcast layer. Upon contacting Spokane Approach; we were given vectors for runway 12; followed by a descent clearance; which put us in IMC conditions. Spokane Approach asked if we were able to accept a visual clearance to runway 12. We stated that we would advise once we had the airport in sight.Upon breaking through the overcast layer; I was able to see the airport and acknowledged with ATC it was in sight; followed by being cleared for the visual approach to Runway 12. Due to the fact we were on radar vectors; we elected to execute a visual approach from the north side of the airport. Terrain vigilance was maintained; while flying a stabilized approach and landing.The reason for this report is based on further review of the MSO [approach] pages during our extended debrief. We discovered that there was a 'must' statement in the Terrain Considerations paragraph; stating that all visual maneuvering must be accomplished south or southwest of Runway 12/30; unless receiving radar vectors from Approach/ Departure. Every time we fly into these mountain airports it is a different dynamic.We as a crew would like to make several enhanced recommendations:1. Coordinate with Spokane Approach [on the company's] visual maneuver restrictions South and Southwest of the airport.2. Put a pictorial on the approach-page showing no visual maneuvering is allowed northwest of the airport. 3. Relocate the terminology regarding visual maneuvering to [the same page as a] Visual Arrival. 4. For better clarification; separately state; due to terrain all visual maneuvering of the aircraft must be accomplished south or southwest of the Runway 12/30.  Only radar vectors north of the airport may be accomplished to an instrument approach.
Captain reported that vital information regarding the visual approach to MSO is inconspicuous in the company issued charts.