Siller Helicopters, LLC

Siller Helicopters, LLC (doing business as Siller Helicopters Inc.), a for-profit Subchapter S Corporation based in Yuba City, California, provides specialized aerial firefighting and emergency response helicopter services to the federal government as a prime contractor on delivery orders and indefinite delivery contracts, with no subcontractor role and 100% of recent awards as prime work.

Siller Helicopters operates a fleet of Type 1, 2, and 3 helicopters equipped with water buckets, tanks, hoists, and advanced firefighting systems to deliver fire suppression, water bucket drops, aerial ignition, air tactical supervision, short-haul and rappel operations, reconnaissance, and emergency response missions. The vendor holds a $50 million Multiple Award Indefinite Delivery Contract for Type 1 Helicopter Support Services awarded by the National Interagency Fire Center on January 1, 2025, running through December 31, 2034, procured through a Lowest Price Technically Acceptable solicitation. Under this parent vehicle, Siller has already received 38 delivery orders totaling $56.2 million in combined potential value. The vendor also holds a legacy Basic Ordering Agreement (12024B20G5056) valued at $26.5 million through 2023 (now superseded), which generated 138 delivery orders worth $79.9 million. Representative delivery orders include a $14.7 million aerial firefighting support order for Placerville, California (May 12, 2025, Total Small Business set-aside), a $16.7 million order for Grantsdale, Montana (May 12, 2025, Total Small Business set-aside), a $1.37 million delivery order (August 1, 2025), and a $1.43 million order (August 16, 2024). All delivery orders to date carry firm-fixed-price terms with ultimate completion dates of December 31, 2024 or 2029.

Customer concentration is extreme: the Department of Agriculture Forest Service Fire and Aviation Management National Interagency Fire Center accounts for 183 awards worth $410.6 million combined potential value (100% coverage), with the Department of the Interior National Park Service Pacific West Region contributing only 2 awards worth $48 thousand. This vendor is a single-customer business focused entirely on call-when-needed aerial firefighting support for federal wildland fire management.

Activity shows significant year-on-year decline: 55 awards in 2022, 45 in 2023, 38 in 2024, and 36 in 2025, with only 3 awards in 2026 to date. This pattern reflects the transition from the legacy Basic Ordering Agreement (which generated most historical volume through 2024) to the newer $50 million IDC (awarded January 1, 2025). The vendor faces no near-term recompete cliff; the new IDC runs through 2034, anchoring forward pipeline. Combined potential value across all 185 awards stands at $410.6 million, with $331.9 million obligated (81% of potential). Service Contract Inventory reporting shows zero invoiced revenue across FY2022–FY2024 for SCI-reportable contracts, reflecting the goods-and-services classification of helicopter delivery orders, which fall outside SCI's $150 thousand-plus service-contract threshold.

Siller Helicopters is a child entity of Helicopter Express LLC, a for-profit limited liability company headquartered in Atlanta, Georgia. The parent relationship does not appear to carry operational synergy; Siller's federal work is entirely dedicated to NIFC aerial firefighting, and the source does not identify other Helicopter Express business lines or subsidiaries. Siller competes in full-and-open federal procurements; the majority of delivery orders carry no set-aside designation, though two orders (May 12, 2025) used Total Small Business set-asides, indicating Siller qualifies as a small business under SBA size standards applicable to this NAICS code (Nonscheduled Chartered Freight Air Transportation). The vendor operates as a prime without major subcontractors—185 awards are 100% prime, zero are sub work, and Service Contract Inventory records show zero sub-hours share.