Harley B. Mcmahan

Harley B. Mcmahan, doing business as Mcmahan Guide And Flying Service, operates as a sole proprietorship providing fixed-wing chartered passenger air transportation and pilot support exclusively to the Department of the Interior as a prime contractor under Total Small Business set-asides on federal IDIQ and BPA vehicles. The vendor is based in Gakona, Alaska, and competes entirely under small-business set-asides across its portfolio.

The vendor's capability footprint is narrow and specialized: on-call fixed-wing aircraft operations and pilot services for remote-area wildlife surveys, census work, radiotracking missions, personnel and equipment transport, and logistical support across Alaska's national parks and preserves. Representative work includes a $55.8 thousand delivery order awarded September 24, 2026, by the Bureau of Land Management for fixed-wing on-call flight services supporting the Caribou Moose 2026 survey in Alaska; a $38.3 thousand delivery order from the National Park Service Alaska Region on April 1, 2026, for fixed-wing services supporting wildlife surveys at Wrangell-St. Elias National Park; and a $20 thousand delivery order from the NPS Alaska Region on February 15, 2025, for radiotracking support on the Yukon-Charlie Rivers subsistence harvest monitoring mission.

Customer concentration is heavily skewed toward Interior Department sub-offices. The National Park Service Alaska Region dominates award volume with 56 awards totaling $451 thousand combined potential value, but the Interior Business Center anchors the dollar exposure: eight awards carrying $58.7 million combined potential value, driven entirely by a newly awarded $18.6 million Indefinite Delivery Contract issued February 23, 2026, running through March 31, 2031, for fixed-wing on-call flight services across Alaska with Total Small Business set-aside designation. This vehicle replaced an earlier $20 million IDC active since 2003. The Bureau of Land Management Alaska Region accounts for eleven awards ($152 thousand combined potential value). Together, Interior entities represent all meaningful federal customer exposure.

The vendor places task orders under five parent vehicles, dominated by two BPAs and the recent Interior Business Center IDIQ. The legacy Blanket Purchase Agreement IND12PA00144 carries 26 task orders ($155 thousand combined potential value); the DOI Fixed Wing Flight Services — AK/HI 2017-2018 vehicle carries 26 task orders ($140 thousand); and the newer Indefinite Delivery Contract 140D8121D0018 carries 12 task orders ($152 thousand). Activity has slowed in recent years — four awards in 2022, four in 2023, declining to one award in 2024 and one in 2025, with three awards through September 2026. Only two awards face completion within the next twenty-four months with combined potential value of $94 thousand, reflecting minimal recompete exposure in the near term. The vendor operates no subcontractor relationships; 100% of the portfolio is prime work. Place of performance spans Gakona, Fairbanks, Glennallen, Eagle, and Copper Center, Alaska, with operations under 14 CFR Part 121 or 135 FAA certifications for nonscheduled charter air transportation (NAICS 481211).