IFR Symbols Flashcards

RNAV Route / GNSS Required

TWEB (Transcribed Weather Broadcast) Alaska only

NDB/DME Non Compulsory

FSS associated with a NAVAID

VORTAC non compulsory

ARTCC Remoted Site with discrete VHF and UHF frequencies

Remote Communication Outlet (RCO) with FSS name and remoted freq(s)

VORTAC compulsory

NDB compulsory

VOR non compulsory

stand-alone ASOS/AWOS

shutdown or phased-out status

VOR/DME non compulsory

ASOS/AWOS

LF/MF Airway

NDB non compulsory

Part-time or on-request

Air Defense Identification Zone (ADIZ)

NDB/DME compulsory

receive only freq.

Air Traffic Service Identifier

Standard Terminal Service Volume. 25 NM at 12,000 AGL

FSS name

VOR/DME compulsory

TACAN must be placed in “Y” mode to recieve distance information

FSS, RCO, or ASOS/AWOS not associated with a NAVAID

HIWAS

VOR Airway