Dibble helped Harriet Alexander Field replace and relocate an aging Automated Weather Observing System (AWOS) to improve the reliability and accuracy of critical weather information for pilots.

The January 2024 completion highlights Dibble’s ability to deliver NAVAID and systems projects for general aviation airports on tight budgets.

Challenge

The existing 2006-era AWOS was unreliable, difficult to maintain due to limited replacement parts, and installed in a non-standard location that introduced interference into the data.
Airport sponsors needed a modern system that met FAA siting criteria, increased safety, and could be funded through a combination of federal, state, and local sources.​

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Our Approach

Dibble provided full design and construction management services for replacing the system with a new AWOS III P/T at an optimized location on the airfield. The team validated the new site through a 2022 field visit, coordinated closely with FAA standards and the AWOS Site Preparation Manual, and packaged the work to align with grant funding requirements.

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Technical Solutions

• Design for a new AWOS III P/T, including an updated AWOS sensor array, wind sensor tower, and supporting electrical infrastructure.​
• Use of existing geotechnical data to size and design foundations and structures for local soil and climate conditions.​
• Directional boring under the runway and taxiways to install a new electrical duct bank without disrupting runway operations or requiring extended closures.

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Value Delivered

• More accurate, reliable weather reporting that improves pilot situational awareness and airport safety.​
• Minimal operational disruption thanks to trenchless construction methods beneath active pavement.
• Successful funding strategy leveraging FAA Airport Infrastructure Grants (AIG) along with state and local contributions.

Project Lifecycle