212, we started the SH-60B Seahawk with the UH-60 pitot static system, but wound up moving the probes and utilizing separate static ports. The aerodynamics with relatively low but powerful rotors and the lower climb and descent profiles, combined with fuselage add-ons make for aerodynamic irregularities.
Going back to the basic UH-60 prototype, we did over 100 flights on 652 ( the powerplant integration and sub-systems test vehicle ) wherein the pitot static system was on the test card. And yes, there were all sorts of “ colorful “ suggestions as to how to fix the system.