Chapter 16. Class C Airspace
Section 1. General
C airspace areas are designed to improve aviation safety by
reducing the risk of midair collisions in the terminal area
and enhance the management of air traffic operations
16-1-2. NONRULEMAKING ALTERNATIVES
Before initiating rulemaking actions to establish Class C
airspace, exhaust all nonrulemaking alternatives that
provide for an acceptable level of safety and are consistent
with the objectives of standardization and simplification.
Such alternatives include, for example, the following
a. Improved radar services.
b. Pilot/controller education programs and aviation
education safety seminars.
16-1-3. REGIONAL/SERVICE AREA OFFICE EVALUATION
a. Service area offices must biennially evaluate
existing and candidate Class C airspace areas using the
information contained in this chapter as a guideline.
b. If the conclusion of an evaluation indicates that
airspace establishment or modifications should be made,
regions/service area offices must follow the applicable
procedures in this order.
c. Additionally, any planned modifications to or
establishments of Class C airspace areas must be coordinated
with Airspace Regulations and ATC Procedures Group prior to
any public announcement.
16-1-4. CLASS C AIRSPACE
a. A provision may be incorporated in part-time Class C
airspace area designations (rules) to allow, by Notices to
Airmen, for changes when minor variations in time of
designation are anticipated. To apply this provision a
Notice of Proposed Rulemaking and final rule must be issued
which provides the following statement in the specific
airspace designation: “This Class C airspace area is
effective during the specific dates and times established,
in advance, by a Notice to Airmen."
b. The effective date and time will thereafter be
continuously published. Information concerning these surface
areas must be carried in the following publications as
1. The Airport/Facility Directory for the contiguous
United States, Puerto Rico, and Virgin Islands.
2. United States Flight Information Publication
3. The Pacific Chart Supplement.
c. Notices to Airmen specifying the dates and times of a
designated part-time area may be issued by the appropriate
facility only after coordination with the regional/service
area office. The service area office must assure that such
action is justified and in the public interest.