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AIM 

4/20/23

 

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Types of Charts Available

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North Pacific Oceanic Route Charts

6. Airport Obstruction Charts (OC).

The OC is a 1:12,000 scale graphic depicting 14 CFR Part 77,

Objects Affecting Navigable Airspace

surfaces, a representation of objects that penetrate these surfaces, aircraft

movement and apron areas, navigational aids, prominent airport buildings, and a selection of roads and other
planimetric detail in the airport vicinity. Also included are tabulations of runway and other operational data.

7. FAA Aeronautical Chart User’s Guide. 

A booklet designed to be used as a teaching aid and reference

document. It describes the substantial amount of information provided on FAA’s aeronautical charts and
publications. It includes explanations and illustrations of chart terms and symbols organized by chart type. The
users guide is available for free download at the AIS website.

e. Digital Products.

1. The Digital Aeronautical Information CD (DAICD).

The DAICD is a combination of the NAVAID

Digital Data File, the Digital Chart Supplement, and the Digital Obstacle File on one Compact Disk. These three
digital products are no longer sold separately. The files are updated every 56 days and are available by
subscription only.

(a) The NAVAID Digital Data File.

This file contains a current listing of NAVAIDs that are compatible

with the National Airspace System. This file contains all NAVAIDs including ILS and its components, in the
U.S., Puerto Rico, and the Virgin Islands plus bordering facilities in Canada, Mexico, and the Atlantic and Pacific
areas.

(b) The Digital Obstacle File.

This file describes all obstacles of interest to aviation users in the U.S.,

with limited coverage of the Pacific, Caribbean, Canada, and Mexico. The obstacles are assigned unique
numerical identifiers, accuracy codes, and listed in order of ascending latitude within each state or area.

2. The Coded Instrument Flight Procedures (CIFP) (ARINC 424 [Ver 13 & 15]).

The CIFP is a basic

digital dataset, modeled to an international standard, which can be used as a basis to support GPS navigation.
Initial data elements included are: Airport and Helicopter Records, VHF and NDB Navigation aids, en route
waypoints and airways. Additional data elements will be added in subsequent releases to include: departure
procedures, standard terminal arrivals, and GPS/RNAV instrument approach procedures. The database is
updated every 28 days. The data is available by subscription only and is distributed on CD

ROM or by ftp

download.