Green Bay–Austin Straubel International Airport GRB / KGRB

Provides GPU, potable water, oxygen/nitrogen servicing, courtesy vehicles, concierge and full ramp/line support for general aviation traffic at its GRB terminal. · 0500-2100 daily

Full-service ramp and ground handling with over 1 million sq ft of ramp space, its own belt loader and K-loader for large charter operations, ground power carts, and lavatory service; markets itself as capable of servicing aircraft from a Cessna 152 up to a Boeing 777.

Delta directly hires its own Ramp Agent (Customer Service Agent) and Ticket/Gate Agent staff at GRB station, indicating Delta self-handles ramp, baggage, and passenger service for its flights at this airport rather than using a third-party ground handler.

United Ground Express, United Airlines' wholly owned ground-handling subsidiary, staffs a station at GRB (part-time cross-utilized ramp/customer-service agents), self-handling United's flights at this airport; nationally the company also contracts turns for other carriers including American, Alaska, Avelo, Frontier, JetBlue, Southwest and Sun Country, though no GRB-specific contract with those carriers is confirmed.

Envoy Air, American Airlines' wholly owned regional subsidiary, hires its own Airport Agent Ramp and Customer Service staff at GRB, indicating it self-handles American Eagle regional-jet turns at this station.

Full-service FBO selling Jet A and 100LL avgas (Avfuel Pro Card accepted); this is one of GRB's two FBOs, formed when Avflight acquired the former Executive Air facility in April 2025. · 0500-2100 daily

Titan Fuel-branded full-service FBO selling Jet A and 100LL avgas at GRB, GRB's other full-service FBO alongside Avflight.

Offers aircraft de-ice/anti-ice services for based and transient aircraft during winter months.

Provides Type I and Type IV de-ice capability with dedicated deice trucks for based and transient aircraft during winter operations.

Certified line technicians provide aircraft maintenance support alongside core FBO services.

Operates an FAA-certified Class III repair facility offering maintenance and avionics installation at its Green Bay hangar complex (120,000 sq ft heated hangar space).

Haven MRO acquired the on-airport maintenance facility at GRB in June 2025, operating from the Avflight Green Bay FBO campus, providing scheduled inspections, unscheduled repairs, annuals, avionics installs and heavy modification/STC work for light and medium business jets and turboprops (King Air, Citation, Hawker, Embraer, Falcon, Challenger, Learjet); the Green Bay site is pursuing FAA Part 145 certification.

Engine shop — in-house turbine shop servicing Pratt & Whitney PT6 (HSI, routine inspections) and JT15 (routine inspections), Honeywell/Garrett TPE331 ("well over 75 years of 331 expertise"), GE CJ610 and Williams FJ44 turbine engines (routine inspections); affiliated with Dallas Airmotive, Standard Aero and Pratt & Whitney; holds FAA Part 145 repair station MZ2R023L, Powerplant rating (Limited).

Avionics/instrument shop — bench testing and repair, instrument exchange, compass swings, CVR beacon testing, emergency power supply (battery pack) inspections and deep-cycle checks, IFR pitot-static and transponder 2-yr recertification, ADS-B and custom avionics installs; certified dealer list includes Garmin, PS Engineering, Genesys Aerosystems, Aspen Avionics, JPI; holds FAA Part 145 repair station MZ2R023L, Radio Class 1/2/3 and Instrument (Limited) ratings.

Accessory shop (hydraulic/pneumatic/electrical/fuel accessories) — holds FAA Part 145 repair station MZ2R023L, Accessory rating (Limited); specific accessory component types not itemized on company site.

Coordinates passenger catering and refreshments through its concierge desk.

Arranges gourmet catering for passengers through its FBO concierge service.

Offers aircraft disinfecting service (100% surface disinfection, avionics-safe, FAA approved).