A320 IRS Drift Over Time
I am planning on doing an 'Around the world' flight in a Study level A319 Simulator. (which does simulate IRS drift)
I was planning on keeping the IRS's on after each landing to save on time and effort to align them each time, but I am worried about drift adding over time.
I assume most LCC's today probably don't realign the IRS's after each flight, till they secure the plane after the last flight of the day.
Practically, would it be a concern?