RTCA DO 180 : A1990

Foreword
1.0 Purpose and scope
1.1 Introduction
1.2 System characteristics
1.2.1 Waypoint definition
1.2.2 Course selection
1.2.2.1 "TO-FROM" equipment
1.2.2.2 "TO-TO" equipment
1.2.3 Path computation
1.2.4 Coordinate systems
1.2.5 Aircraft position computation
1.2.6 Navigation modes and annunciation
1.2.7 Station selection
1.2.8 VOR/DME latitude/longitude sensors
1.2.9 Lateral and vertical steering outputs
1.2.10 Holding pattern maneuvering
1.3 Intended use and operational environment
1.3.1 Area navigation in the present ATC system
1.3.2 Historical considerations
1.3.3 Route width consideration
1.3.3.1 En route RNAV route
1.3.3.2 En route VOR airway route
1.3.3.3 Terminal
1.3.3.4 Approach
1.3.4 Postulated air traffic control environment
1.3.5 Operational environment assumptions
1.4 Error budgets
1.4.1 Error budget - 2D
1.4.1.1 VOR/DME sensors
1.4.1.2 North reference effects
1.4.2 Error budget - VNAV
1.5 Test procedures
1.5.1 Bench tests
1.5.2 Environmental tests
1.5.3 Installed tests
1.5.4 Operational tests
1.6 Definitions of terms
2.0 Equipment performance requirements and test
           procedures
2.1 General requirements
2.1.1 Airworthiness
2.1.2 General performance
2.1.3 Fire resistance
2.1.4 Operation of controls
2.1.5 Accessibility of controls
2.1.6 Sensor interfaces
2.1.7 Control/display capability
2.1.8 Control/display readability
2.1.9 Effects of test
2.1.10 Maneuver anticipation and direct-to function
2.1.11 Display update rate
2.2 2D RNAV functional and accuracy requirements
           - standard conditions
2.2.1 Equipment functional requirements
2.2.1.1 Cross-track deviation
2.2.1.2 Waypoint distance display (output display)
2.2.1.3 "TO-FROM" indication
2.2.1.4 Course selection
2.2.1.5 Waypoint and station selection
2.2.1.6 Waypoint storage
2.2.1.7 Waypoint or leg sequencing
2.2.1.8 Position display
2.2.1.9 Input data observation
2.2.1.10 Failure/status indications
2.2.1.11 Slant range error correction
2.2.1.12 Equipment computational response time
2.2.2 2D accuracy requirements
2.2.3 Dynamic tracking
2.2.4 Tracking through short outages
2.3 VNAV functional and accuracy requirements -
           standard conditions
2.3.1 Equipment functional requirements
2.3.1.1 Waypoint altitude
2.3.1.2 Vertical path deviation
2.3.1.3 Vertical profile
2.3.2 VNAV accuracy requirements
2.4 Equipment performance - environmental
           conditions
2.4.1 Temperature and altitude tests
2.4.1.1 Operating low temperature test
2.4.1.2 Short-time operating high temperature test
2.4.1.3 Operating high temperature test
2.4.1.4 In-flight loss of cooling test
2.4.1.5 Altitude test
2.4.1.6 Decompression test
2.4.1.7 Overpressure test
2.4.2 Temperature variation test
2.4.3 Humidity test
2.4.4 Shock tests
2.4.4.1 Operational shocks
2.4.4.2 Crash safety shocks
2.4.5 Vibration test
2.4.6 Explosion proofness test
2.4.7 Waterproofness tests
2.4.7.1 Drip proof test
2.4.7.2 Spray proof test
2.4.7.3 Continuous steam proof test
2.4.8 Fluids susceptibility tests
2.4.8.1 Spray test
2.4.8.2 Immersion test
2.4.9 Sand and dust test
2.4.10 Fungus resistance test
2.4.11 Salt spray test
2.4.12 Magnetic effect test
2.4.13 Power input tests
2.4.13.1 Normal operating conditions
2.4.13.2 Abnormal operating conditions
2.4.14 Voltage spike conducted test
2.4.14.1 Category A requirements
2.4.14.2 Category B requirements
2.4.15 Audio frequency conducted susceptibility test
2.4.16 Induced signal susceptibility test
2.4.17 Radio frequency susceptibility test (radiated
           and conducted)
2.4.18 Emission of radio frequency energy test
2.4.19 Lightning induced transient susceptibility
2.5 Equipment test procedures
2.5.1 Definitions of terms and conditions of tests
2.5.2 Test procedures
2.5.2.1 Cross reference
2.5.3 2D RNAV functional and accuracy requirements
           - standard conditions
2.5.3.1 Static tests
2.5.3.2 Dynamic tests
2.5.4 VNAV functional and accuracy requirements -
           standard conditions
2.5.4.1 Static tests
2.5.4.2 Dynamic tests
3.0 Installed equipment performance
3.1 Equipment installation
3.1.1 Accessibility
3.1.2 Display visibility
3.1.3 Interference effects
3.1.4 Inadvertent turnoff
3.2 Installed equipment performance requirements
3.2.1 General performance requirements
3.2.1.1 Cross-track deviation display
3.2.1.2 Vertical path deviation display
3.2.1.3 Lateral maneuver anticipation
3.2.1.4 Automatic lateral change
3.2.1.5 Direct-to function
3.2.1.6 Vertical maneuver anticipation
3.2.1.7 Automatic altitude change
3.2.1.8 Display of selected waypoint
3.2.2 Installed accuracy
3.2.2.1 Background
3.2.2.2 Standard error budget
3.2.2.3 System error tradeoffs
3.3 Conditions of test
3.3.1 Power input
3.3.2 Associated equipment or systems
3.3.3 Environment
3.3.4 Adjustment of equipment
3.3.5 Warm-up period
3.4 Test procedures for installed equipment
           performance
3.4.1 Ground test procedures
3.4.1.1 Conformity inspection
3.4.1.2 Equipment function
3.4.1.3 Interference effects
3.4.1.4 Power supply fluctuations
3.4.1.5 Equipment accessibility
3.4.2 Flight test procedures
3.4.2.1 Displayed data readability
3.4.2.2 Interference effects
3.4.2.3 Flight demonstration
3.4.2.4 Simulator demonstration
4.0 Operational characteristics
4.1 Required operational characteristics
4.1.1 Power input
4.1.2 Navigation displays
4.1.3 Navigation controls
4.1.4 System operational integrity
4.1.5 Equipment operating limitations
4.2 Test procedures for operational
           characteristics
4.2.1 Power input
4.2.2 Navigation displays
4.2.3 Navigation controls
4.2.4 System operational integrity
Membership
Appendices
A Postulated area navigation operational environment
   definition
B Acceptable trade-off techniques for determining
   systems performance
C Glossary of terms for navigation functions
D Great circle course computations
E Implementing epoch year magnetic variation values
F Acceptable procedural techniques for lateral
   maneuver anticipation

Defines operational goals and applications and recommends standards and test procedures for airborne area navigation equipment (2D and 3D) using sensor inputs from a single collocated VOR/DME station.