(b)
 ground control.

Fr: service de contr.le VFR
VFR flight
A flight conducted in accordance with visual flight rules (VFR).
Fr: vol VFR
VFR holding procedure The holding of aircraft in an orbital path around selected prominent geographical locations that can be easily recognized from the air. Fr: procédure d’attente VFR
VFR navigation chart An aeronautical chart (using a scale of 1:500 000) designed for visual navigation of slow- or medium-speed aircraft. Topographic information on these charts features the portrayal of relief and a judicious selection of visual checkpoints for VFR flight. Aeronautical information includes visual and radio aids to navigation, airports, controlled airspace, restricted areas, obstacles, and related data.
. abbreviation: VNC
Fr: carte aéronautique de navigation VFR
VFR-on-top U.S.: ATC authorization for an IFR aircraft to operate in VFR conditions at any appropriate VFR altitude (as specified in the FARs and as restricted by ATC). Note: VFR-on-top is not permitted in Canada. 
VFR OTT Abbreviation for: VFR over-the-top Fr: VFR OTT
VFR over-the-top A VFR flight in which a pilot climbs in visual meteorological conditions (VMC), proceeds en route above inclement weather, and descends in VMC at a destination that had been forecast for conditions surpassing VMC for a period extending before and after the estimated time of arrival (ETA).
. abbreviation: VFR OTT
Note: VFR over-the-top does not exist in the U.S.

Fr: vol VFR au-dessus de la couche
VFR terminal area chart An aeronautical chart (using a scale of 1:250 000) that depicts terminal control area (TCA) airspace, which provides for the control or segregation of all aircraft within the TCA. The chart depicts topographic information and aeronautical information, which includes visual and radio aids to navigation, airports, controlled airspace, restricted areas, obstacles, and related data.