INSTRUMENT FLIGHT RULES

Section 91.167 - Fuel requirements for flight in IFR conditions
Section 91.169 - IFR flight plan: Information required
Section 91.171 - VOR equipment check for IFR operations
Section 91.173 - ATC clearance and flight plan required
Section 91.175 - Takeoff and landing under IFR
Section 91.176 - Straight-in landing operations below DA/DH or MDA using an enhanced flight vision system (EFVS) under IFR
Section 91.177 - Minimum altitudes for IFR operations
Section 91.179 - IFR cruising altitude or flight level
Section 91.180 - Operations within airspace designated as Reduced Vertical Separation Minimum airspace
Section 91.181 - Course to be flown
Section 91.183 - IFR communications
Section 91.187 - Operation under IFR in controlled airspace: Malfunction reports
Section 91.189 - Category II and III operations: General operating rules
Section 91.191 - Category II and Category III manual
Section 91.193 - Certificate of authorization for certain Category II operations
Section 91.195-91.199 - Reserved
Section 91.185 - IFR operations: Two-way radio communications failure