Harley B. Mcmahan

Harley B. Mcmahan, operating as Mcmahan Guide And Flying Service, a sole proprietorship based in Gakona, Alaska, provides fixed-wing on-call aircraft services and pilot support to federal agencies as a prime contractor exclusively, with 100% of recent federal work awarded under the vendor's own name rather than through subcontracts. The vendor holds a Total Small Business set-aside designation and competes predominantly under that category on Interior Department vehicles. Mcmahan Guide And Flying Service operates under NAICS 481211 (Nonscheduled Chartered Passenger Air Transportation), with 101 of its 113 federal awards falling into that category.

The vendor's work concentrates almost entirely on the Department of the Interior. The top five Interior customers by award count account for 73% of recent awards, with the National Park Service Alaska Region placing 56 awards (combined potential value $435 thousand) and the Interior Business Center's Departmental Offices anchoring 8 awards carrying $58.7 million in combined potential value. The divergence reflects the Interior Business Center's role in issuing a $18.6 million Indefinite Delivery Contract awarded to Mcmahan on February 23, 2026, running through March 31, 2031, for fixed-wing on-call flight services across Alaska. This IDC replaces an older $20 million indefinite-delivery vehicle that has been active since at least 2003 and generated over $200 thousand in delivery orders. Mcmahan's task-order activity flows primarily through three blanket purchase agreements and the indefinite-delivery vehicles: Blanket Purchase Agreement IND12PA00144 (26 task orders, $155 thousand combined potential value), DOI Fixed Wing Flight Services – AK/HI 2017–2018 (26 task orders, $140 thousand combined potential value), and Blanket Purchase Agreement IND81ARA3001 (18 task orders). Recent named work includes a $22.33 thousand fixed-price delivery order from the NPS Alaska Region awarded April 1, 2026, for fixed-wing on-call flight services supporting 2026 wildlife surveys at Wrangell-St. Elias National Park; a $19.99 thousand order from February 15, 2025, for Yukon-Charlie Rivers and Subsistence Harvest Monitoring radiotracking missions; and a $20.55 thousand order from June 25, 2024, for wildlife survey and census work at Wrangell-St. Elias and Katmai national parks.

Award frequency has declined from four awards per year in 2022 to one per year in 2025 and 2026, though the new $18.6 million IDC substantially increases the vendor's contract ceiling. Only one award ($22 thousand combined potential value) reaches ultimate completion within the next twenty-four months, minimizing near-term recompete exposure. The vendor operates exclusively in Alaska, with places of performance including Gakona, Fairbanks, Glennallen, Eagle, and Copper Center, serving remote-area wildlife research, personnel transport, and logistical missions for NPS and BLM operations across multiple national parks and preserves.