Faa nas architecture system engineering process
This presentation is the property of its rightful owner.
1 / 30

FAA NAS Architecture System Engineering Process PowerPoint PPT Presentation

FAA NAS Architecture System Engineering Process. OMG Transportation Tammy Parsons April 27, 2004. NAS Architecture. Physical. Functional. | | | | | | | | | |. Requirements. Program Data . Service Groups. Services. Capabilities. Mechanisms (systems, people, Support activities). …….

Download Presentation

FAA NAS Architecture System Engineering Process

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

Faa nas architecture system engineering process

FAA NAS Architecture System Engineering Process

OMG Transportation

Tammy Parsons

April 27, 2004

Nas architecture

NAS Architecture







Service Groups




(systems, people,

Support activities)





Improvement 1


Improvement n






Operational improvements

Operational Improvements

  • Service Group

  • Service

  • Capability

  • Operational Improvement

  • Source References

  • Description

  • Benefits

  • Systems

  • Support Activities

  • People

  • Interfaces

  • Issues

  • Functional Architecture

  • Air Traffic Service Group

  • Flight Planning Service

  • Flight Plan Support Capability

  • Provide Interactive Flight Planning from Anywhere

  • Physical Architecture

  • NG-TFM

  • FAA Adaptation for Provide Interactive Flight Planning from anywhere

  • Flight Service Specialist

  • NG-TFM to CMS interface

Faa standardized system engineering process

FAA Standardized System Engineering Process

  • System Engineering Manual defines processes

  • System Engineering Council supports and enforces processes

  • SE courses train the workforce in standard processes

System engineering process overview

System Engineering Process Overview

Customer Requirements

Requirements Analysis


Functional Analysis

& Modeling

Se tool summary

SE Tool Summary

  • Requirements – DOORS

  • Functional Analysis – CORE

  • Modeling – Rational Rose

  • Synthesis – CATS-I



  • NAS-SR-1000 Requirements

    • Current NAS Operations

    • Trace to Capability (Current OI steps)

  • CONOPS Requirements

    • Requirements based on future customer needs

    • Trace to future OIs

Functional analysis modeling

Functional Analysis & Modeling

  • NAS Functional Hierarchy

    • Service Group

    • Service

    • Capability

  • Enhanced Functional Flow Block Diagrams, N2 diagrams, Data Dictionaries

  • State/Activity Diagrams, Sequence Diagrams, Use Case Diagrams, Class Diagrams,

Synthesis design

Synthesis (Design)

  • Mechanisms

    • Systems

    • People

    • Support activities

  • Mechanism data includes:

    • Description

    • Quantities

    • Deployment schedule

    • Interfaces

  • Programmatic data includes

    • Cost

    • Schedule

Se product relationships

SE Product Relationships

Current operations



Operational Improvement






  • Service Group

  • Service

  • Capability

  • Operational Improvement

  • Source References

  • Description

  • Benefits




N2 diagrams

Data dictionary

Function descriptions






Existing 4 levels

of NAS functional



  • Systems

  • Support Activities

  • People

  • Interfaces



Functional and

Physical data


State diagrams,

sequence diagrams, etc.

Flight planning example

Flight Planning Example

  • Example is for Current Flight Plan Support, a Current OI

    • NAS-SR-1000 requirements, rather than CONOPS

    • Existing systems

    • Provides the baseline operations against which future improvements will be made

Flight plan support requirements

Flight Plan Support Requirements

Fp functional analysis

FP Functional Analysis

  • Function descriptions (Service Group, Service, Capability) – available on NAS Architecture 5

  • Other products (EFFBDs and N2) under development

Fp functional analysis1

FP Functional Analysis

Flight Planning

The Flight Planning Service provides both flight plan support and flight plan data processing to support the safe and efficient use of the nation's airspace through the development and use of coordinated flight plans. This includes preparing and conducting pre-flight and in-flight briefings, filing flight plans and amendments, managing flight plan acceptance and evaluation, preparing flight planning broadcast messages, and maintaining flight-planning data archives. This service offers preparation to conduct a flight within the NAS and allows changes to flight profiles while operating within the NAS.


Flight Plan Support

Flight plan support takes the user's intention for a flight, compares that intention against known NAS constraints and provides feedback to the user. The user's intention includes expected route, altitude, time of flight, and aircraft capabilities. Constraints include available routes, special use airspace (SUA) restrictions, daily demand conditions and anticipated flight conditions including weather and sky conditions (e.g. volcanic ash, smoke, birds), winds and temperatures, surface conditions, and any significant meteorological condition. Aeronautical information includes notices to airmen containing information concerning the establishment, condition, or change in any NAS component (facility, service, or procedure, or hazard in the NAS) the timely knowledge of which is essential to flight. Based on this constraint identification and feedback the user develops a flight plan that best meets individual objectives. This support includes both the initial flight plan and any proposed user proposed amendments along the way.

Flight Data Management

Flight data management maintains the knowledge of a flight within the NAS. This activity includes both Visual Flight Rules (VFR) and Instrument Flight Rules (IFR) flights from activation until flight plan cancellation or closing. The management of flight data can vary from an indication that the flight plan is active in the NAS until closure or can include maintaining knowledge of current positions in the NAS through pilot reports and/or radar contact and updates to the projected forward trajectory. The forward trajectories support separation assurance and flight advisories in their allocation of the flight to the appropriate service provider. Implementation of flight data management occurs at or near the start of a planned flight. It includes activation following the issuance of a clearance for flight, distributing flight plans to appropriate ATC facilities along routes, as well as updates based on current position and along the route of flight including changes based on in-flight amendments. Once an IFR flight is airborne or VFR associated flight plan has been activated, the flight plan remains active in the NAS until the flight plan is closed. Information associated with the flight remains available to all authorized users, controllers/specialists, emergency and supervisory personnel before, during, and after the flight as necessary for processing.


Fp functional analysis2

FP Functional Analysis

Fp modeling

FP Modeling

  • State/Activity Diagrams

  • Sequence Diagrams

  • Use Case Diagrams

  • Class Diagrams

State activity diagrams

State/Activity Diagrams

Sequence diagrams duats

Sequence Diagrams - DUATS

Sequence diagrams fast file

Sequence Diagrams-Fast File

Sequence diagrams person to person

Sequence Diagrams-Person-to-Person

Sequence diagrams oasis

Sequence Diagrams-OASIS

Use case diagrams

Use Case Diagrams

Use case diagrams1

Use Case Diagrams

Class diagrams

Class Diagrams

Functional analysis modeling products on nas architecture 5

Functional Analysis / Modeling Products on NAS Architecture 5


Current flight plan support oi sections 1 4

Current Flight Plan Support: OI sections 1-4

Current flight plan support oi sections 8 9

Current Flight Plan Support: OI sections 8-9

Current flight plan support oi sections 10 11

Current Flight Plan Support: OI sections 10-11



  • The NAS Architecture is continuously updated to address:

    • Funding issues

    • Industry changes

    • Technology advances

  • As SE products are generated, they are made available on the Internet at NAS Architecture 5

Faa nas architecture system engineering process


  • Login