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AIM

10/12/17

7−1−4

Meteorology

e. The AWRP review and decision−making

process applies criteria to weather products at various

stages . The stages are composed of the following:

1. Sponsorship of user needs.

2. R & D and controlled testing.

3. Experimental application.

4. Operational application.

f. Pilots and operators should be aware that

weather services provided by entities other than FAA,

NWS, or their contractors 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 (for

example, current weather or forecast weather), the

currency of the product (that is, 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.

g. In addition, pilots and operators should be

aware there are weather services and products

available from government organizations beyond the

scope of the AWRP process mentioned earlier in this

section. For example, governmental agencies such as

the NWS and the Aviation Weather Center (AWC), or

research organizations such as  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 proto-

types 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 (for

example, 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.

h. With increased access to weather products via

the public Internet, the aviation community has

access to an over whelming amount of weather

information and data that support self-briefing. FAA

AC 00-45 (current edition) describes the weather

products distributed by the NWS. Pilots and

operators using the public Internet to access weather

from a third party vendor 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 (for example,

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 and when in doubt, consult with a Flight

Service Specialist.

i. The development of new weather products,

coupled with the termination of some legacy textual

and graphical products may create confusion between

regulatory requirements and the new products. All

flight−related, aviation weather decisions must be

based on all available pertinent weather products. As

every flight is unique and the weather conditions for

that flight vary hour by hour, day to day, multiple

weather products may be necessary to meet aviation

weather regulatory requirements. Many new weather

products now have a Precautionary Use Statement

that details the proper use or application of the

specific product.

j. The FAA has identified three distinct types of

weather information available to pilots and operators.

1. Observations. Raw weather data collected

by some type of sensor suite including surface and

airborne observations, radar, lightning, satellite

imagery, and profilers.

2. Analysis. Enhanced depiction and/or inter-

pretation of observed weather data.

3. Forecasts. Predictions of the development

and/or movement of weather phenomena based on

meteorological observations and various mathemati-

cal models.

k. Not all sources of aviation weather information

are able to provide all three types of weather

3/15/07

7110.65R CHG 2

AIM

9/13/18