Kalamazoo/Battle Creek International Airport AZO / KAZO

Provides FBO line service for business aviation: aircraft parking/ramp, tiedown and hangar storage, and passenger terminal/pilot lounge access. · 0400-2300 daily (local)

Envoy Air, a wholly owned American Airlines Group regional subsidiary, self-handles ramp and customer-service ground operations for American Eagle flights at AZO; confirmed via active Envoy Air ramp/customer-service job postings for the Kalamazoo station.

Contracted third-party ground handler providing ramp agent and customer-service agent staffing for Delta Connection flights at AZO, per recurring Unifi Aviation "(Delta)-AZO" job postings for the station.

United's wholly owned ground-handling subsidiary supports ramp and station operations for United Express flights at AZO, where United (operating CRJ-550/CRJ-200 equipment to Chicago O'Hare) returned April 30, 2026; corroborated by a Kalamazoo-based Ground Operations Lead vacancy posting.

Primary FBO at AZO (5605 Portage Rd.) selling Jet A and 100LL avgas full-service; an Avfuel-branded dealer participating in the Avfuel Contract Fuel program, and IS-BAH Stage II certified. · 0400-2300 daily (local)

Operates a self-service 100LL avgas fueling facility at AZO for general aviation aircraft, listed on AirNav, AOPA, and SkyVector as a 24-hour self-service option. · 24 hours (self-service)

FBO service listings confirm de-ice/pre-heat service with GPU start is offered for based and transient business aircraft during winter operations.

The airport's own general-aviation services listing names "Aircraft Maintenance" among Duncan's AZO offerings, but Duncan's own AZO FBO page describes the site as line/fuel/pilot/hospitality services only, so on-site maintenance scope is unconfirmed. This AZO location is a satellite FBO, NOT one of Duncan's three full-service MRO/heavy-maintenance facilities (those are Battle Creek MI, Lincoln NE, and Provo UT).

On-airport, FAA Part 145-certified repair station at AZO (2729 E. Milham Ave.) providing routine maintenance, annual inspections, major modifications, structural repair, and engine work for piston-powered general aviation aircraft.

Part 135 charter/aircraft-management company based at AZO with its own 30,000 sq ft hangar and on-site fuel farm; A&P/IA mechanics service Beechjet, Challenger, and Citation 650/750-series aircraft, but this is primarily scoped to RAI's own managed fleet and unconfirmed as a general third-party MRO for transient traffic.

Ground power unit (GPU) start/service available on the ramp per FBO service listings.

Provides a customer/crew shuttle and courtesy car to and from its FBO facility, per Duncan's AZO service page and the airport's general-aviation services listing.