For questions about Aeronautical Information Products and Services (i.e. Instrument Flight Procedures, Charts, Aeronautical Data, or NOTAMs) not addressed below please contact the FAA's Aeronautical Information Services through the Aeronautical Inquiry Portal.
- What digital (electronic format) products does Aeronautical Information Services make available?
- How can I get a copy of an electronic chart?
- Can FAA's digital products be used in private industry software products? What are the copyright/licensing regulations for these products?
- Can I use the CIFP (Coded Instrument Flight Procedures) to update my GPS or FMS?
- Why can't I get your digital files sooner than 20 days prior to their effective dates?
- Why is there a difference between the magnetic variation for the airport and the VOR located at the same airport?
- What is the significance of a runway 8069 feet in length and why are two different aerodrome symbols used to depict hard surface runways on Sectional charts?
- What is the meaning of RP and *RP on VFR Charts?
- What does "OBJECTIONABLE" stand for on VFR Charts?
- How do I add a public or private airport to a chart? (One with a FAA Location Identifier)
- How do I register a private use airport to obtain a location identifier or make changes to an existing private use airport?
- How can I change the information for a Public Use or Military Airport?
- How can I get a parachute jumping symbol for a specific area put on a chart?
- How can I get a towed glider symbol for a specific area put on a chart?
- How can I add or make a change to the UNICOM or Common Traffic Advisory Frequency (CTAF) for an airport?
Chart Supplements - formerly the Airport / Facility Directory
Instrument Flight Procedures
- What is an instrument flight procedure?
- How does FAA develop an instrument flight procedure?
- What data will be required for FAA to produce these Instrument Procedure Charts?
- What shall I expect after the instrument flight procedure is developed?
- How can I report chart discrepancies?
- Where can I review product errors and see product enhancements?
Chart User's Guide
- Why should I fly with current charts?
- What is the FAA policy for carrying current charts?
- What is the database currency requirement needed for VFR or IFR flight?
- What is the process for establishing Rulemaking (i.e. Class A, B, C, etc., Restricted, etc.) and Nonrulemaking (i.e. Military Operations, Warning, Alert, etc.) Airspace areas on aeronautical charts?
What digital (electronic format) products does Aeronautical Information Services make available?
- Terminal Procedures and Airport Diagrams
- Chart Supplements
- Coded Instrument Flight Procedures
- VFR Charts
- VFR Class B Graphics
- IFR Charts
- MVA and MIA Charts
- Chart User's Guide
- Digital Obstacle File
- Daily Digital Obstacle File
- Obstacle Construction Notices
- NASR Subscriber Files
- National Flight Data Digest (NFDD)
Access the Aeronautical Information Services homepage to stay abreast of new aeronautical products and services as they become available.
How can I get a copy of an electronic chart?
FAA electronic files are posted to Digital Products for free download and/or printing as needed.
Can the FAA's digital products be used in private industry software products?
What are the copyright/licensing regulations for these products?
All digital products published by the FAA are in the public domain and are not copyright protected. Therefore, a written release or credit is not required to incorporate them into your own digital products. The FAA cannot endorse or recommend one private industry product over another. Also, since all of our products are date sensitive we recommend that you seek legal advice prior to marketing your own products. To protect the integrity of our aeronautical products, all notations and symbology in the original products are to be included in any tailored versions.
Can I use the CIFP [Coded Instrument Flight Procedures] to update my GPS or FMS?
The CIFP (Coded Instrument Flight Procedures) uses the ARINC 424 standard. GPS and FMS do not currently support the use of "raw" ARINC 424 data. Individual avionics manufacturers process the data into their proprietary format for use in GPS or FMS units. The FAA does not process aeronautical information for use in any GPS or FMS.
Why can't I get your digital files sooner than 20 days prior to their effective dates?
20 days prior availability is a general term. FAA's digital files are posted as soon as practically possible. The information cut-off for the next cycle is 30 days prior to the effective date. That gives us about 10 days, including weekends and holidays, to compile all of the data and get the files posted by the 20th day prior. We strive each cycle to release these products quickly, on or about 20 days prior. Please see list below:
- Digital Terminal Procedures - available 19 days prior
- Digital Chart Supplements - available 21 days prior
- Digital Visual Charts - available 21 days prior
- Digital IFR Charts - available 19 days prior
- Coded Instrument Flight Procedures - available 21 days prior
- Digital Enroute Caribbean Charts - available 14 days prior
Why is there a difference between the magnetic variation for the airport and the VOR located at the same airport?
When a navaid is first constructed, the antenna is physically oriented to True North. Then a potentiometer adjustment is made to slave the navaid with Magnetic North. This action matches the isogonic line making it agree with a magnetic compass. Initially these two values are the same, but the magnetic variation of the earth changes at differing rates depending upon location and time.
Navigational aids go into service and remain online 24 hours a day, 365 days a year. The FAA performs periodic maintenance; however, readjustments to match the isogonic value require a total shut down of the equipment, plus recertification and flight check verification. This process begins when a navigational aid is out of tolerance by at least +/-6 degrees. GPS databases use a MAGVAR model to calculate the most up-to-date magnetic variation.
What is the significance of a runway 8069 feet in length and why are two different aerodrome symbols used to depict hard surface runways on Sectional charts?
For purposes of airport depiction, specialists represent a runway between 7970 and 8069 feet in length as 8000 feet, which equates to a line 0.192 inches in length on the Sectional chart scale. In this case, a circular aerodrome symbol is used.
If a runway is between 8070 and 8169 feet in length, specialists round to 8100 feet, which equates to a line 0.1944 inches in length on the sectional chart scale. This line is too long to fit into the largest circular aerodrome symbol FAA has available. Therefore, specialists place a line-work around the runway pattern forming a polygon (enclosed shape) for anything over 8069 feet in length.
Specialists also place these polygons around the runway pattern of aerodromes with multiple runways that are less than 8069 feet, in cases where the multiple runway pattern does not fit into the largest, circular aerodrome symbol.
What is the meaning of RP and *RP on VFR Charts?
RP is the abbreviation for "right pattern" followed by the appropriate runway number(s) and indicates a right traffic pattern.
*RP indicates that there are special conditions or restrictions for right traffic and the pilot should consult the Chart Supplement for those special instructions and/or restrictions. *RP does not indicate that there is right patterned traffic for all aircraft at all times.
What does "OBJECTIONABLE" stand for on VFR Charts?
The type "OBJECTIONABLE" associated with an airport symbol indicates that an objectionable airspace determination has been made for the airport per FAA Order JO 7400.2 Section 4, Airport Charting and Publication of Airport Data. Objectionable airspace determinations can be based upon a number of factors including conflicting traffic patterns with another airport, hazardous runway conditions, or natural or man-made obstacles in close proximity to the landing area. FAA Regional Airports Offices are responsible for airspace determinations. Address any challenges to objectionable airspace determinations to your FAA Regional Airports Office.
How do I add a public or private airport to a chart? (One with a FAA Location Identifier)
VFR charts depict airport's hard and soft surface runways. Enroute charts depict airports having hard surface runways of at least 3000-foot in length. If your airport meets those criteria, you may contact the local Federal Aviation Administration, Airports District Office or Aeronautical Information Management, AJV-21, at 1-(866) 295-8236 to have your airport charted.
The FAA Specialist will verify your airport's information and publish a change in the National Flight Data Digest. This change will generate a charting directive to depict your airport on the chart. The FAA will chart your airport as long as it does not cause chart clutter and does not interfere with any existing data that may have a higher safety priority. The FAA makes every effort to adjust chart data to accommodate your airport name and symbol on the chart for the next publication cycle.
How do I register a private use airport to obtain a location identifier or make changes to an existing private use airport?
To register a private use airport with FAA or make changes to an existing private use airport, please complete and submit FAA FAA Form 7480-1 (INFORMATION) to your local Regional Office per instructions found on the form or submit your information electronically via the OE/AAA system. Once you have begun the registration process, you may contact the same office for the status of your application. To make changes to an existing private use airport, please contact the Regional Office listed on the Form for further assistance.
How can I change the information for a Public Use or Military Airport?
Visit the Aeronautical Data Portal. This information can be found on the inside front cover of the Chart Supplements and shown here. To recommend revisions access (Submit airport data change form.) or write to:FAA, Aeronautical Information Services
1305 East-West Highway
SSMC4, Suite 4531
Silver Spring, MD 20910-3281
Telephone: 800-638-8972 (toll free, U.S. only)
How can I get a parachute jumping symbol for a specific area put on a chart?
Parachute-jumping symbols designate airspace areas to alert the flying public of special air traffic activity. Charting these areas may be accomplished by contacting the FAA Air Traffic Facility (Control Tower, Approach Control Facility, Air Route Traffic Control Center (ARTCC)) having jurisdiction over the airspace and requesting the specific area be charted. The FAA specialist will submit a Special Activity Area Data Sheet to the National Flight Data Center (NFDC) at FAA Headquarters for publication in the National Flight Data Digest. For depiction on a chart, the parachute jumping area must:
- Be in operation for at least 1 year.
- Conduct (and log) 1,000 or more jumps each year.
FAA Regions can nominate jump sites if special circumstances require charting.
Once published in the National Flight Data Digest, FAA Aeronautical Information Services adds the PARACHUTE JUMPING AREA to that section of the Chart Supplement. If it meets minimum charting requirements, the FAA Aeronautical Information Services depicts the appropriate charts with the Parachute Jump Area symbol in the next publication cycle.
How can I get a glider symbol for a specific area put on a chart?
Charting these areas is accomplished by adding an associated remark to the airport record (Example: "Glider activity in vicinity of airport"). Airport owners/managers should access the National Flight Data Center (NFDC) Portal at nfdc.faa.gov and submit an Airport Data Change Form (public and military airports only) or contact Aeronautical Information Management, AJV-21, at 1-(866) 295-8236 and request the addition of the remark. The FAA specialist will verify your information and publish a change in the National Flight Data Digest (NFDD). Once the change is in the NFDD the appropriate publication and charts are updated with the information for the next effective date.
How can I add or make a change to the UNICOM or Common Traffic Advisory Frequency (CTAF) for an airport?
To add, modify or delete UNICOM or Common Traffic Advisory frequencies, airport owners/managers should access the Aeronautical Data Portal and submit an Airport Data Change Form (public and military airports only) or contact Aeronautical Information Management, at 1-(866) 295-8236 and request your authorized UNICOM or CTAF be published and/or charted. The FAA Specialist will verify your information and publish a change in the National Flight Data Digest (NFDD). Once published in the NFDD, the appropriate publications and charts will reflect the new information by the next effective date.
Chart Supplements (formerly the Airport / Facility Directory)
How can I update my airport diagram information?
Any graphic changes should be submitted using the Aeronautical Chart Change Form found within the Aeronautical Data Portal to submit your requested graphic changes.
How can I make a change to the Chart Supplements?
Requests to make changes to the Chart Supplements should be submitted via our Web Portal: Aeronautical InquiriesFAA, Aeronautical Information Services
1305 East-West Highway
SSMC4, Suite 4531
Silver Spring, MD 20910-3281
Telephone: 800-638-8972 (toll free, U.S. only)
If any clarification or further information is required a specialist will contact you. As soon as the National Aeronautical Data Team has entered your requested change/changes into their database, notice will be directed to everyone producing relevant aviation publications requiring all to amend their products.
Instrument Flight Procedures
What is an instrument flight procedure?
An instrument flight procedure is a series of predetermined maneuvers for aircraft operating under instrument flight rules, i.e. IFR conditions, when visual flight is not possible due to weather or other visually restrictive conditions. These maneuvers allow for the orderly transition of the aircraft through a particular airspace. The term "instrument flight procedure" refers to instrument approaches, instrument departures, and instrument enroute operations.
IFR approach procedures are developed and approved for a specific airport. These procedures are critical to flight safety and safe operations during periods of marginal weather/visibility and in areas of adverse terrain.
Instrument approach procedures also allow for the transition from enroute operations to the terminal area for landing at the destination airport. The instrument approach procedure uses ground or satellite based systems to provide guidance and obstruction clearance to the runway or to an altitude from which visual operations for landing can begin.
Departure procedures allow for orderly movement along a specified route providing obstruction clearances from the point of departure to a position at which EnRoute operations can begin.
How does FAA develop an instrument flight procedure?
The specialist uses terrain, and man-made obstruction data in the development of the airport procedure. The specialist also considers any special design needs requested by the applicable country that meet the specified criteria. Each segment of the procedure is designed and documented.
What data will be required for FAA to produce these Instrument Procedure Charts?
The charting of instrument flight procedure is restricted to those that have been Quality Controlled by the FAA. In order to complete these charts, accurate data is required in English, by the requesting country. These may include airport, obstacle, communication, fix, special use and terrain data.
What shall I expect after the instrument flight procedure is developed?
Once a designed instrument flight procedure passes the quality review process, it is certified through an actual flight inspection, and then it's charted and published for use.
How can I report chart discrepancies?
You are encouraged to bring charting errors to our attention. Every FAA Aeronautical product contains contact information and brief instructions for reporting charting errors. You may contact us via our Web Portal: Aeronautical Inquiries or by calling 800-638-8972 (toll free, U.S. only).
Where can I review product errors and see product enhancements?
You can find out about product errors and updates by going to the Safety Alerts/Charting Notices page. Also consider subscribing to this page by clicking the Subscribe Icon located above the Top Tasks box. This will allow us to send you an email notification when anything is added to this page.
Chart User's Guide
What is the Aeronautical Chart User's Guide?
FAA Aeronautical Chart User's Guide is designed to be used as a teaching aid, reference document, and an introduction to the wealth of information provided on FAA's aeronautical charts and publications. It includes explanations of aeronautical chart terms and symbols, plus a visual depiction of all of the symbols organized by chart type.
Why should I fly with current charts?
FAR 91.103 Preflight action
Before beginning a flight, each pilot in command shall, before beginning a flight, become familiar with all available information concerning that flight.
FAA charts and related products are continually updated to reflect current aeronautical, terrain and cultural information. The following table shows the average number of changes per product type per cycle:
|Product Type||Changes/Cycle (average)||Cycle Length|
|Terminal Area Chart||33||56 days|
|Sectional Chart||93||56 days|
|Chart Supplements||825||56 days|
|Enroute Low Altitude Chart (U.S.)||1361||56 days|
|Enroute High Altitude Chart (U.S.)||284||56 days|
|Enroute Low Altitude Chart (Alaska)||128||56 days|
|Enroute High Altitude Chart (Alaska)||63||56 days|
|Terminal Procedures Publication||2800||56 days|
What is the FAA policy for carrying current charts?
The specific FAA regulation, FAR 91.103 "Preflight Actions," states that each pilot in command shall, before beginning a flight, become familiar with all available information concerning that flight. Although the regulation does not specifically require it, you should always carry a current chart with you in flight. Expired charts may not show frequency changes or newly constructed obstructions, both of which when unknown could be a hazard.
The only FAA/FAR requirements that pertain to charts are:
- Title 14 CFR section 91.503[a] (Large and Turbojet powered aircraft)
- Title 14 CFR section 135.83 (Air Carriers-Little Airplane)
- Title 14 CFR section 121.549 (Air Carrier-Big Airplanes)
The FAA's July/August 1997 issue of FAA Aviation News on "current" aeronautical charts provided the following information:
- "You can carry old charts in your aircraft." "It is not FAA policy to violate anyone for having outdated charts in the aircraft."
- "Not all pilots are required to carry a chart." "91.503..requires the pilot in command of large and multiengine airplanes to have charts." "Other operating sections of the FAR such as Part 121 and Part 135 operations have similar requirements."
- ..."since some pilots thought they could be violated for having outdated or no charts on board during a flight, we need to clarify an important issue. As we have said, it is NOT FAA policy to initiate enforcement action against a pilot for having an old chart on board or no chart on board." That's because there is no regulation on the issue.
- ..."the issue of current chart data bases in handheld GPS receivers is a non-issue because the units are neither approved by the FAA or required for flight, nor do panel-mounted VFR-only GPS receivers have to have a current data base because, like handheld GPS receivers, the pilot is responsible for pilotage under VFR.
- "If a pilot is involved in an enforcement investigation and there is evidence that the use of an out-of-date chart, no chart, or an out-of-date database contributed to the condition that brought on the enforcement investigation, then that information could be used in any enforcement action that might be taken."
What is the database currency requirement needed for VFR or IFR flight?
AIM 1-1-19b3(b) Database Currency (1) In many receivers, an up-datable database is used for navigation fixes, airports and instrument procedures. These databases must be maintained to the current update for IFR operations, but no such requirement exists for VFR use. (2) However,...
AIM 1-1-19f1(b) Equipment and Database Requirements - For IFR Operations "All approach procedures to be flown must be retrievable from the current airborne navigation database..."
AC 90-100, U.S. TERMINAL AND EN ROUTE AREA NAVIGATION (RNAV) OPERATIONS, paragraph 8a(3): The onboard navigation data must be current and appropriate for the region of intended operation and must include the navigation aids, waypoints, and relevant coded terminal airspace procedures for the departure, arrival, and alternate airfields.
Navigation databases are expected to be current for the duration of the flight. If the AIRAC cycle will change during flight, operators and pilots should establish procedures to ensure the accuracy of navigation data, including suitability of navigation facilities used to define the routes and procedures for flight. Traditionally, this has been accomplished by verifying electronic data against paper products. One acceptable means is to compare aeronautical charts (new and old) to verify navigation fixes prior to dispatch. If an amended chart is published for the procedure, the database must not be used to conduct the operation."
Published instrument procedures and routes are incorporated by reference into 14 CFR Part 95 and 14 CFR Part 97, are "law." They are "effective" only during the AIRAC cycle dates specified on the enroute chart/TPP covers or on the side of the chart when printed from the digital-TPP. If you are using a published procedure before or after the dates specified on the chart under IFR, you are technically in violation of the law.
What is the process for establishing Rulemaking (i.e. Class A, B, C, etc., Restricted, etc.) and Nonrulemaking (i.e. Military Operations, Warning, Alert, etc.) Airspace areas on aeronautical charts?
The FAA cannot arbitrarily depict airspace on its charts without proper authorization. Certain procedures must be followed before the FAA may chart any aeronautical information, especially airspace. Please consult FAA Order, JO 7400.2 - Procedures for Handling Airspace Matters for information about the process for establishing rulemaking and nonrulemaking airspace.