Paint and de-paint operations account for a large portion of the hazardous waste produced by DoD aviation , and de-painting/repainting operations are often performed because of the visible change in the color, gloss, or chalking of the topcoat after weathering. The current topcoat for the majority of military aerospace applications is MIL-PRF-85285, a polyurethane high solids formulation. The products qualified to MIL-PRF-85285 are tested for initial gloss and color change after accelerated weathering at 500 hours in Xe-Arc exposure. The relatively new modified topcoats are being touted as having better weatherability and cleanability than the legacy products qualified to the MIL-PRF-85285 specification. At this time, there are no requirements or performance criteria to determine ‘advanced performance’ per the MIL-PRF-85285.  Based on these claims the new modified topcoats that are being called advanced performance coatings (APC’s) were tested head to head with traditional coatings formulations. A polyurethane chemical agent resistant coating (CARC) qualified to MIL-DTL-64159 was also included in the testing. This effort examined the corrosion performance, weatherability, cleanability, and adhesion properties of the modified topcoats. The cost of the modified coatings is approximately 30% greater than more traditional formulations, and it must be determined if there are any benefits to the use of the modified topcoats.