Charles D Schroth

Charles D Schroth, doing business as Southeast Aerial, is a sole proprietorship providing fixed-wing aircraft, pilot, and maintenance services to the Department of the Interior as a prime contractor (100% of awards) under small business set-aside and full-and-open vehicles. Based in Gustavus, Alaska, Southeast Aerial operates exclusively in remote Alaskan environments and specializes in on-call aviation support for federal land management, scientific research, and conservation missions.

Southeast Aerial's customer base is entirely concentrated within the Department of the Interior. The National Park Service Alaska Region accounts for 68 awards (80% of award count) with $555 thousand combined potential value, while the U.S. Geological Survey Alaska Science Center holds 10 awards totaling $53 thousand. However, the Interior Business Center dominates the potential-value ranking with $45.6 million across four awards, driven by two recently awarded IDIQs: a $20 million multiple-award Indefinite Delivery Contract awarded April 1, 2026, with a March 31, 2031 completion date, and a $500,000 Blanket Purchase Agreement awarded June 17, 2026, with a September 4, 2029 completion date. Both vehicles are 100% small business set-asides for on-call fixed-wing transportation services across Alaska. The U.S. Fish and Wildlife Service Region 7 has also issued orders under these vehicles.

Representative recent work includes three delivery orders issued by the NPS Alaska Region in May and June 2026 under the prior $20 million small business set-aside IDIQ (awarded April 1, 2021, completion March 31, 2026): a $14,839 order for fixed-wing aircraft and pilot services under contract GLBA LE DB FLIGHTS 2026 (ultimate completion December 31, 2026), a $9,950 order for Glacier Bay trails flights, and an $18,695 order for Glacier Bay building flights. Earlier task orders supporting the same IDIQ vehicle included a $26,674 aerial survey contract for Steller sea lion and harbor seal monitoring in Glacier Bay (completed December 4, 2023), a $22,931 delivery order for Alsek River stream gauge maintenance (completed December 18, 2024), and recurring orders for wildlife surveys, archaeological site documentation, weather station support, and infrastructure maintenance flights throughout 2022–2025. Individual task order values typically range from under $1,000 to over $29,000.

Activity has been uneven but sustained. The vendor received 12 awards in 2022, 9 in 2023, 10 in 2024, and 5 each in 2025 and 2026 through mid-year. Only three awards (combined potential value $43 thousand) carry ultimate completion dates within the next twenty-four months, reflecting the newly awarded multi-year IDIQs that extend through 2029–2031. The vendor has received over 40 delivery orders cumulatively under predecessor IDIQ vehicles since its initial federal registration in September 2016.

The primary contract vehicles are the newly awarded $20 million Indefinite Delivery Contract (140D8121D0023, 3 task orders, $43 thousand combined potential value in the portfolio snapshot) and a predecessor $20 million IDIQ that generated 45 task orders totaling $381 thousand. An older DOI Fixed Wing Flight Services vehicle for Alaska and Hawaii (2017–2018) generated 32 task orders worth $193 thousand. The 2026 BPA and IDIQ awards substantially increase Southeast Aerial's capacity ceiling for future task orders from Department of the Interior agencies across Alaska.

Southeast Aerial competes exclusively under small business set-asides (Total Small Business or no set-aside designation) and has no subcontract exposure in the source data. The vendor's capability portfolio is narrowly focused on fixed-wing aviation: aircraft operation, pilot services, and maintenance support for remote Alaskan federal missions including wildlife population monitoring, aerial surveys, personnel and equipment transportation to isolated field sites, infrastructure access and maintenance flights, stream gauge service, weather station support, and archaeological site documentation. FAA certification under 14 CFR Part 121 or 135 and active SAM.gov registration support continuous eligibility for Interior contract vehicles.