Operational Information System (OIS)

Introduction:

The Operational Information System (OIS) is the FAA's Air Traffic Control System Command Center (ATCSCC) near real-time National Airspace System (NAS) status information system
- NAS operators are encouraged to access the OIS at http://www.fly.faa.gov/flyfaa/usmap.jsp prior to filing their flight plan

An advisory message is disseminated electronically by the ATCSCC
- Advisories are sent when information, beneficial to a large number of people, is available
- Advisories may not be sent if the activity is only expected for a short length of time
Advisories are normally issued for the following items:
- Ground Stops
- Ground Delay Programs
- Route Information
- Plan of Operations
- Facility Outages and Scheduled Facility Outages
- Volcanic Ash Activity Bulletins
- Special Traffic Management Programs (Computerized Voice Reservation System (e-CVRS)/e-STMP

Ground stops are when aircraft are held on the ground and not permitted to takeoff
Ground Stops are implemented for a number of reasons. The most common reasons are:
- To control air traffic volume to airports when the projected traffic demand is expected to exceed the airport's acceptance rate for a short period of time
- To temporarily stop traffic to allow time for the implementation of a longer-term solution, such as a Ground Delay Program
- The affected airport's acceptance rate has been reduced to zero
The most widespread use of this procedure was on September 11, 2001

The Ground Delay Program (GDP) is a traffic management process administered by the ATCSCC; when aircraft are held on the ground
The purpose of the program is to support the TM mission and limit airborne holding
It is a flexible program and may be implemented in various forms depending upon the needs of the AT system
Ground delay programs provide for equitable assignment of delays to all system users

Route information is available on the web site and in specific advisories
Some route information, subject to the 56-day publishing cycle, is located on the "OIS" under "Products," Route Management Tool (RMT), and "What's New" Playbook
The RMT and Playbook contain routings for use by Air Traffic and NAS operators when they are coordinated "real-time" and are then published in an ATCSCC advisory
The RMT and Playbook contain routings for use by Air Traffic and NAS operators when they are coordinated "real-time" and are then published in an ATCSCC advisory
Route advisories are identified by the word "Route" in the header; the associated action is Required (RQD), Recommended (RMD), Planned (PLN), or For Your Information (FYI)
Operators are expected to file flight plans consistent with the Route RQD advisories

Available at http://www.fly.faa.gov/ois/" under "System Impact Reports"
This page lists scheduled outages/events/projects that significantly impact the NAS
Information includes anticipated delays and Traffic Management Initiatives (TMI) that may be implemented

NAS operators are encouraged to access the website at http://www.fly.faa.gov prior to filing their flight plan
This information is useful for pre-flight planning but remember, updates are published on a workload permitting basis
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