3.6.5.1 (D1) Sponsorship of user needs.
3.6.5.2 (D2) R & D and controlled testing.
3.6.5.3 (D3) Experimental application.
3.6.5.4 (D4) Operational application.
3.6.6 Weather products maturing into the D3 experimental stage of the AWTT process are often made available to the public on the Aviation Weather Center’s Experimental Aviation Digital Data Service (ADDS) website at: http://weather.aero/. The intent is to allow public access to this information in order to obtain feedback for product development and improvement. However, it is important to note that weather products displayed on this site are experimental, and although they may appear to be fully operational products, they are subject to change without notification and may not be used for any flight related decisions. At the D4 stage, the FAA approves a weather product for operational use by end users (with restrictions, if necessary), and the product is made available to the public via long.line circuit, satellite, and/or other means of communica-tion.
3.6.7 Pilots and operators should be aware that weather services provided by entities other than FAA, NWS or their contractors (such as the DUATS and FISDL providers) may not meet FAA/NWS quality control standards. Hence, operators and pilots contemplating using such services should request and/or review an appropriate description of services and provider disclosure. This should include, but is not limited to, the type of weather product (e.g., current weather or forecast weather), the currency of the product (i.e., product issue and valid times), and the relevance of the product. Pilots and operators should be cautious when using unfamiliar products, or products not supported by FAA/NWS technical specifications.
NOTE.
When in doubt, consult with a FAA Flight Service Station Specialist.
3.6.8 In addition, pilots and operators should be aware there are weather services and products available from government organizations beyond the scope of the AWTT process mentioned earlier in this section. For example, governmental agencies such as the NWS, the Aviation Weather Center (AWC), and the National Center for Atmospheric Research (NCAR) display weather “model data” and “experimental” products which require training and/or expertise to properly interpret and use. These products are developmental prototypes that are subject to ongoing research and can change without notice. Therefore, some data on display by government organizations, or government data on display by independent organizations may be unsuitable for flight planning purposes. Operators and pilots contemplating using such services should request and/or review an appropriate description of services and provider disclosure. This should include, but is not limited to, the type of weather product (e.g., current weather or forecast weather), the currency of the product (i.e., product issue and valid times), and the relevance of the product. Pilots and operators should be cautious when using unfamiliar weather products.
NOTE.
When in doubt, consult with a FAA Flight Service Station Specialist.
3.6.9 The development of new weather products coupled with increased access to these products via the public Internet, created confusion within the aviation community regarding the relationship between regulatory requirements and new weather products. Consequently, FAA differentiates between those weather products that may be utilized to comply with regulatory requirements and those that may only be used to improve situational awareness. To clarify the proper use of aviation weather products to meet the requirements of 14 CFR, FAA defines weather products as follows:
3.6.9.1 Primary Weather Product. An aviation weather product that meets all the regulatory requirements and safety needs for use in making flight related, aviation weather decisions.
3.6.9.2 Supplementary Weather Product. An aviation weather product that may be used for enhanced situational awareness. If utilized, a supplementary weather product must only be used in conjunction with one or more primary weather product. In addition, the FAA may further restrict the use of supplementary aviation weather products through limitations described in the product label. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：美国航行情报汇编 AERONAUTICAL INFORMATION PUBLICATION AIP 1(133)
