Navigational Systems
So I was on my way to Karn as part of the 'Unto, The Past' mission, and as I'm orbiting the planet, with the location in my databanks, I try to fly to it but I get told the Navigational Systems are banjaxed. I hvae TARDIS repairkits on standby, but attempting to use them doesn't do any good. I'v eno idea what to do to fix this, but I'm trapped in the TARDIS for now.
The Fault Locator is giving me nothing, the Event Status Reader is giving me even less. I'm completely at a loss and have no idea how to fix the TARDIS, and as I said I can't exit because I'm in space right now. The one thing that might be of significance: as I ws travelling to hte coordinates for Karn, it mentioned I was entering the Medusa Cascade, and there was a bright flash…