IFR Flights
Is there a regulation in FAA that insists on having both sides ASI (i.e. both pilot and copilot's) instrument displaying airspeed indication available for the flight to continue Instrument Approach and land? In other words can I go and land off, say an ILS approach if either pilot's or copilot's Air Speed Indicator(ASI) is not available and the visibilty is only suitable for say CAT-I ILS only?