I designed a fighter, which, of course, does not have any maintenace capacity. Even though they were orbiting Earth, they were suffering constant maintenance failures, so I designed them a PDC. I added tons of maintenance spaces on the PDC, but for some reason that doesn't appear on the class summary window, only on the component summary window. I put my fighters in 10-strong squadrons and assigned the squadrons to the PDC, but the damaged ones did not repair and they kept suffering maintenance failures, one even exploded! Even after I assigned them to the same TG as the PDC. Also, on the TG window, my PDC's maint supplies is displayed as N/A.
Scheer class Base 15 750 tons 375 Crew 1500.5 BP TCS 315 TH 0 EM 0
Armour 5-55 Sensors 1/0 Damage Control Rating 0 PPV 0
Hangar Deck Capacity 13000 tons
This design is classed as a Planetary Defence Centre and can be pre-fabricated in 7 sections
That's my PDC design, if it helps.