Part 91 General Operating and Flight Rules

Subpart E Instrument Flight Rules

91.401 - Minimum flight crew

91.403 - Fuel requirements for flights under IFR

91.405 - IFR alternate aerodrome requirement

91.407 - IFR flight plan

91.409 - Adherence to flight plan

91.411 - Inadvertent change to flight plan

91.411A - Pilot-in-command and operator to Inform ATS unit of carriage of dangerous goods

91.413 - Take-off and landing under IFR

91.415 - Category II and III precision approach procedures

91.417 - Category II and III precision approach procedure manual

91.419 - Approval of category II and III precision approach procedure manual

91.421 - Operating in icing conditions

91.423 - Minimum altitudes for IFR flights

91.425 - IFR cruising altitude or flight level

91.427 - IFR radio communications

91.429 - IFR operations radio communications failure

91.431 - Notification of facility malfunctions