Enroute and Area Charts Flashcards
What does the brown color represent?
Low and medium frequency aids, Military Training Routes, Boaders to military training operating areas, and airports without a published instrument approach.
It is also used to depict Class G airspace which extends from the surface to 14,500 ft.
All airspace in the U.S above 14,500 is Controlled Airspace.
What does the white color represent?
Class E Airspace.
What is the blue color for?
Airspace identification Zones.
Prohibited Airspace
Restricted Airspace
Alert Areas Warning Areas
Class C airspace
Class B airspace
ATC Bounderies
Air Route Traffic Control Centers (ARTCC)
Airports in Blue means what?
They have an approved Instrument Approach Procedure published
Airport procedures that are published only in the united states government flight information publication means what?
They are depicted in green in the enroute chats
What is is the green color used for?
Shore lines
times zones
Isogonic lines
Airport procedures that are published only in the united states government flight information
What is black print used for?
VHF & UHF route data such as VOR nav-aids
communication boxes
Airways
What would a number next to the three letter indentifier mean?
Channel number for the DME used for military aircrafts only
What does 122.4 & 122.1R mean?
What if it said 122.1T?
Flight Service Station (FSS) communication frequencies. The letter R means the facility only receives on 122.1. 122.1T would mean that frequency would only be used for transmissions.
What does St Louis mean?
The Flight Service Station has a remote antenna at the site and ST Lous is the controlling facility
What does shadow boxes mean?
What does the solid black square mean?
Standard FSS frequencies are available in addition to those listed above the box.
FSS Standard Frequencies include 121.5, & 122.2.
The solid black square means Hazardous Inflight Weather Information is available from HIWAS
What does the ‘T’ mean?
The facility has Transcribed Weather Broadcasts (TWEB) - continuous recordings of meteorological and aeronautical information, based on specific routes of flight, and broadcast on certain NDB and VOR frequencies.
What does the underline mean?
The nav-aid has no voice capability
What does the shaded over print mean?
The is some sort of abnormal status and you need to check the NOTAMs
VHF navigation routes are defined by what?
VOR’s designated as Victor Airways
VIctor Airways are normally how many miles wide?
8 NM wide up to 51 NM away from the nav-aid. Then it will diverge outward at an angle of 4.5 degrees.
What does the boxed 41 mean?
What about the unboxed 27 & 14?
Total milage between the radio facilities.
27 & 14 indicate the distance between the reporting points, radio aids, and/or mileage breaks.
In this ex, total distance between Farmington and dede intersection is 27NM, then dedee to Cape is another 14NM. 27 + 14 = 41NM total.
What does the small ‘x’ mean
A Mileage breakdown normally for a course change when a reporting point has not been established.
What does the 71/53 mean?
The point where you change frequency between ‘Blue Mesa’ and ‘Pueblo’
What do the arrows at YUMMY intersection mean
The frequency used to define the fix. In this example, YUMMY is defined by the 248 radial from Glade Spring VOR, and the 295 radial from Holeston Mountain Vortac.
What does the open arrow mean?
DME can be used to define the fix. In this example, CALIF intersection is 19NM
What does solid triangles mean?
compulsory reporting point
The pilot of an IFR or controlled VFR flight is required to make position reports over any compulsory reporting points specified on IFR charts, and also over any other reporting point specified by ATC.
The position report shall include the following:
- the identification of the aircraft;
- the identification of the position;
- the time over the reporting point in UTC;
- the altitude or flight level;
- the type of flight plan or flight itinerary filed;
- the name of the next reporting point and the ETA over that point in UTC;
- the name only of the next succeeding reporting point along the route of flight; and
- any additional information requested by ATC or deemed necessary by the pilot.
What does the open triangle mean?
non compulsory reporting point
Not Mandatory
required to make a position report only when requested by ATC.
What kind of airspace is this? How can you tell?
Bravo Airspace because it’s blue with a solid line blue border.
What is the stripe area surronding Bravo Airspace?
The 30NM Mode C vail
What airspace is this? How can you tell?
Class C airspace because it has a dashed blue border. Also because there is a letter ‘C’ in the box. The dashed blue represent the upper portion of the airspace.
What airspace is this? How can you tell?
Class D because of the letter ‘D’ in the box.
What does the star mean?
The airspace is part-time. Information about the hours of operation can be found in the Voice Communication Table in a chart panel near the Legend.
What does 828 L 65 mean?
What about (A) 125.2?
828 - airport elevation
L - Night Lighting is available
65 - Longest runway is 6,500 ft
(A) 125.2 - ATIS available on 125.2
What symbol is this?
A non-directional (radio) beacon (NDB) is a radio transmitter at a known location, used as an aviation or marine navigational aid. As the name implies, the signal transmitted does not include inherent directional information, in contrast to other navigational aids such as low frequency radio range, VHF omnidirectional range (VOR) and TACAN. NDB signals follow the curvature of the Earth, so they can be received at much greater distances at lower altitudes, a major advantage over VOR. However, NDB signals are also affected more by atmospheric conditions, mountainous terrain, coastal refraction and electrical storms, particularly at long range.
What symbol is this?
Localizer course
What is MEA?
Minimum Enroute Altitude (MEA)
The lowest altitude between radio fixes that meets obstacle clearance requirements and still assures adequate radio reception.
EX: 4,700 ft is the MEA for V140
Flying west from STANO intersection, MEA is 12,000 ft. Flying east the MEA is 9,000 ft.
What is MOCA? When is it listed?
Minimum Obstacle Clearance Altitude, or MOCA, is the lowest published altitude in effect between fixes on VOR airways or route segments that meets obstacle (like a building or a tower) clearance requirements for the entire route segment. Within the United States, this altitude also assures acceptable navigational signal coverage only within 22 nm of a VOR.
It is listed when it is lower than the MEA
What does this T bar break mean??
It indicates that a change will occur in the MEA or MOCA
If it is not a intersection from a nav-aid, a milage break symbol ‘x’ is used.
What does this flag with the R mean?
minimum reception altitude (MRA) is the lowest altitude on an airway segment where an aircraft can be assured of receiving signals from navigation aids like VOR or NDB. Typically, the greater the distance between navigation aids, the higher the MRA. MRA is becoming less important with the availability of GPS satellite navigation, which allows aircraft to get navigational guidance all the way down to the ground.
EX: You must be at 13,000 ft to identify WINDO intersection
What does the flag with the ‘x’ mean?
What is PARDOX V244 13000 W?
minimum crossing altitude, or MCA, is the lowest altitude at which a navigational fix can be crossed when entering or continuing along an airway that will allow an aircraft to clear all obstacles while carrying out a normal climb to the required minimum en route IFR altitude (MEA) of the airway in question beyond the fix.
EX; You must cross PARDOX intersection on
V244 - victor airway, @
13300 - 13,000 ft crossing altitude on a
W - West heading
What is MAA?
The maximum authorized altitude (MAA) is the highest altitude at which the airway can be flown without receiving conflicting navigation signals from NAVAIDs operating on the same frequency. Chart depictions appear as “MAA-15000.”
What kind of airspace is this?
Military Operation Area
