What are these structures at KLBO?

Unidentified infrastructure at KLBO (Las Animas Municipal Airport, Colorado) has surfaced as a point of confusion among pilots and aviation observers, with two distinctly marked structures — an orange-and-white building and a separate painted tower — appearing on airport property without explanation in the Airport/Facility Directory or on the airport's official website. The building exhibits several characteristics consistent with FAA ground-based communications or navigation support infrastructure: aviation-standard orange-and-white markings, an onsite generator for backup power, a VHF antenna array, and a post-2019 construction date. The tower, similarly marked, appears to serve a transmit or relay function rather than a sensing or monitoring role. The absence of any associated weather instruments rules out AWOS/ASOS classification, and the airport's lack of a localizer, glideslope, NDB, or VOR eliminates conventional approach navaid housing as an explanation.

The most operationally plausible explanation for the primary building is that it functions as an FAA Remote Communications Outlet (RCO) or a ground infrastructure node associated with the ADS-B NextGen network. RCOs are FAA-operated facilities that extend VHF radio coverage for Flight Service or ATC facilities into areas where direct communication would otherwise be unreliable due to terrain or distance — a common need across rural Colorado's high plains geography. They are routinely equipped with backup generators, are not always prominently documented in pilot-facing publications, and communicate via VHF back to controlling facilities. Alternatively, the structure could house an ADS-B ground receiver and/or UAT (978 MHz) transceiver, consistent with the FAA's accelerated ground station deployment timeline that ran from roughly 2014 through the January 1, 2020 ADS-B Out mandate and continued into subsequent years for coverage gap remediation.

The separate tower's aviation marking is significant. FAA obstruction marking and lighting requirements apply to structures exceeding certain heights or proximity thresholds near airports, but the deliberate use of aviation orange and white paint — rather than simple red obstruction lighting — suggests the tower may have been built to FAA specifications or by an FAA contractor, further supporting its role as government communications infrastructure. Internet relay or cellular repeater towers are occasionally painted in aviation colors when required by local aeronautical study, but the pairing with a similarly marked, generator-equipped companion building suggests a coordinated installation rather than a coincidental telecom deployment.

For working pilots, this type of infrastructure ambiguity carries practical implications. Uncharted or undocumented structures at small, uncontrolled fields can create confusion during preflight planning, particularly for crews relying on ADS-B weather, TFRs, or flight following in remote areas. The fact that KLBO now appears to host active VHF-communicating infrastructure means pilots transiting the southeast Colorado corridor may be receiving ADS-B services or radio relay coverage they would not otherwise expect based on the airport's basic published profile. Operators flying under Part 91 or Part 135 in the region should note that small municipal airports increasingly host FAA network nodes that improve situational awareness infrastructure without materially changing the airport's operational classification or published procedures.

The broader trend here is consistent with FAA's ongoing effort to extend NextGen coverage and communication reach into rural airspace that historically suffered from radar, radio, and ADS-B gaps. Small airports like KLBO offer ideal siting for ground stations — flat terrain, existing power infrastructure, and legal access — without the complexity of urban environments. As the FAA continues to address ADS-B coverage gaps identified post-mandate and expands Remote ID infrastructure, operators should expect to encounter additional unmarked or poorly documented structures at low-activity airports, particularly across the mountain west, Great Plains, and Gulf Coast corridors where legacy coverage has been thinnest.