Ac 20-153a acceptance of Aeronautical Data Processes and Associated Databases
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AC 20-181 - Airworthiness Approval of AHRS
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- 7. Definitions. a.
| 6. Who needs to apply fora LOA? a. This guidance is provided for all organizations within the aeronautical data chain except for an ICAO Contracting State (see paragraph 18 of this AC. This includes operators, data service providers, original equipment manufacturers, and avionics manufacturers that process aeronautical data. Organizations that comply with this AC may apply fora LOA for its aeronautical data process. The LOA identifies organizations within the aeronautical data chain that demonstrate acceptable data processes for applications that include navigation, terrain, obstacle, and airport map databases. Note: For any Assurance Level 1 (critical) or 2 (essential) data that are not included in the Contracting State’s AIP, the origination of data must be validated by the data service provider (reference paragraph 14). b. The LOA formally documents that a supplier’s databases are being produced pursuant to RTCA/DO-200A, or for some established systems, RTCA/DO-200 (see paragraph 19 of this AC. For those applications requiring database integrity (e.g., US. Area Navigation (RNAV) and Required Navigation Performance (RNP) Routes and terminal procedures, airport moving map displays, Terrain Awareness and Warning System (TAWS)), the LOA maybe used as evidence of compliance with RTCA/DO-200A in support of application for operational approval or in support of a maintenance task per the instructions for continued airworthiness. RTCA/DO-200A defines standards for processing and distributing data for aeronautical applications, such as navigation and flight planning. 7. Definitions. a. Aeronautical database – An aeronautical database is any data that is stored electronically in a system that supports airborne aeronautical applications. An aeronautical database maybe updated at regular intervals. Note: In this AC, aeronautical databases will refer to aeronautical data only as defined below. b. Aeronautical data – Data used for aeronautical applications such as navigation, flight planning, flight simulators, terrain awareness and other purposes, which comprises navigation data and terrain and obstacle data. However, this AC does not address databases for engine 09/20/10 AC A power settings (takeoff, climb, MCT, cruise) or airfield performance data (takeoff distance, V speeds) and does not consider these types of data as aeronautical data as used in this AC. c. Airport Map Database – Any navigation data stored electronically in a system supporting airport map applications. Airport map data is information intended to be used to assist the pilot to identify the aircraft's position with respect to items on the airport surface. d. Data supplier – Organizations, not including the Contracting States, or entities acting on behalf of the Contracting State, that collect, processor originate aeronautical data. Data service providers, avionics manufacturers and end operators may all act as data suppliers in the aeronautical data chain. e. Navigation Database – Any navigation data stored electronically in a system supporting navigation applications. Navigation data is information intended to be used to assist the pilot to identify the aircraft's position with respect to flight plans, ground reference points and navaid fixes (such as VHF omni−directional radio ranges (VORs), nondirectional radio beacons (NDBs), etc) as well as items some points on the airport surface. f. Obstacle Database – Any data stored electronically in a system supporting obstacle applications. Obstacle data includes any natural or manmade fixed object which has vertical significance in relation to adjacent and surrounding features and which is considered as a potential hazard to the safe passage of aircraft. g. Terrain Database – Any data stored electronically in a system supporting terrain applications. Terrain data includes the natural surface of the earth excluding man-made obstacles. Download 193.11 Kb. Share with your friends:
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