National Weather Service Barometer Replacement   3

Amendment 0001 posted July 27, 2023 to extend RFP due date to August 16, 2023 at 12:00 pm EST and provide responses to questions received for this solicitation.

The Automated Surface Observing System (ASOS) program is an essential, joint mission
support of the National Weather Service (NWS), the Federal Aviation Administration (FAA),
and the Department of Defense (DOD). The ASOS is the nation's primary system for
collecting and reporting surface-weather observations, primarily at airports, in support of
aviation operations as well as weather forecasting and the timely issuance of warnings. ASOS
directly supports: 1) Air Traffic Controllers rely on surface observations to provide airport
weather parameters to safely support National Aerospace System (NAS) operations, 2)
Surface-weather observations at airports required for dispatch of commercial aircraft, 3)
Surface observations required to support Instrument Flight Rules (IFR) operations, 4) Surface
observation data required by the Office of Operational Systems and used by the NWS to
produce weather forecast models and products, 5) Supporting the aviation community and
flying public by providing required dial-in services to surface-observation stations to obtain
automated voice-weather reports, 6) Providing the general public with up-to-date weather
conditions via a dial-up service, 7) Providing forecasters with detailed and timely surface
conditions from ASOS sites around the Nation, and 8) Providing the aviation community with
Ground-to-Air (GTA) Radio broadcasts of automated voice weather reports.

The current SETRA 470T barometer has been fielded with the ASOS systems for over 18
years and is approaching the end of its useful life cycle. The National Reconditioning
Center (NRC) oversees and repairs SETRA 470T, which is rapidly aging and deemed
unrepairable .

This requirement is to procure a single system replacement Commercial Off-the-Shelf
(COTS) barometer sensor capable of providing a serial data stream to the ASOS per the
Specifications Document.