In corporate IT, failed initial deployments are the norm, and Airservices did a clean roll back. Kudos for that.
And the slowness was solved in 48 hours? Well done.
No it's not. In small organisations who don't plan properly it is. Larger organisations, faults affecting 0.1% of the customer base are considered a MAJOR issue. Most of the IT companies I've worked for have considered 99.999% uptime the minimum standard, and generally did better than that.