Slightly redesigned engine cowlings and new Curtiss Electric propellers were also introduced. Redesigned masts and funnel cowlings were fitted. To isolate aircraft cowlings, cowl mountings and motor-nose supports were manufactured. They were high-wing monoplanes of all-metal construction with valve head blisters on their engine cowlings. Nearly all aircraft radial engines since have used NACA-type cowlings. The leading edges of both wings and both engine cowlings had also sustained damage. The engines were cooled by counter-rotating fans positioned just inside the engine cowlings. Electroluminescent wire strips built into the tire cowlings, wheel rims, and body illuminate the cycle. The first four frames supported the glycol header tank and engine cowlings. Aircraft of the 359th were identified by green around their cowlings and tails. Another design feature from "Carmania" was the addition of two tall forward deck ventilator cowlings. Aircraft of the group were identified by yellow around their cowlings and tails. Aircraft of the group were identified by red around their cowlings and tails. Aircraft of the 20th were identified by a black/white stripes along their cowlings and tails. Aircraft of the 364th were identified by a blue/white stripe pattern around their cowlings.