Aircraft overview

The Thrush Aircraft S2R is a single-seat agricultural aircraft built around one primary job: low-level application of liquid or dry materials. The design traces its lineage to the Rockwell S-2R Thrush of the early 1970s, with production continuing through Ayres and later Thrush Aircraft in Albany, Georgia. It is a purpose-built tailwheel work aircraft with a welded steel-tube fuselage, low wing, large hopper, and strong emphasis on maintainability in field operations.

For buyers, the S2R matters because it represents one of the established platforms in the agricultural aviation market, with a long production history and broad support base. It is not a personal transport or utility cabin aircraft; its value is tied to spray-system capability, engine configuration, airframe condition, and productivity in aerial application work.

Performance & specifications

Performance varies significantly across the S2R family because examples may be radial-engine or turbine-powered. Typical cruise speeds are generally in the 120-150 knot range, depending on engine, propeller, load, and spray equipment. Practical range is commonly around 400-500 nautical miles in ferry configuration, but working endurance is driven by hopper load, mission profile, and local operating conditions.

• Role: agricultural spray and dry-application aircraft
• Seating: one pilot
• Hopper: commonly 400 to 510 U.S. gallons, depending on variant and configuration
• Powerplants: Pratt & Whitney R-1340 radial on earlier S2R-600 aircraft; Pratt & Whitney Canada PT6A or GE H80 turbines on later turbine variants
• Service ceiling: typically published in the low-to-mid teens in feet, varying by model

Cabin & avionics

The S2R has a single-seat cockpit rather than a passenger cabin. Visibility, ventilation, pilot protection, and control ergonomics are more important than cabin finish. Buyers should expect utilitarian interiors, often modified over time for operator preference, safety equipment, and application controls.

Avionics are usually mission-specific rather than business-aircraft style suites. Typical equipment may include VHF communication, transponder/ADS-B upgrades where required, GPS lightbar or moving-map guidance, flow-control systems, engine monitoring, and agricultural application computers from suppliers such as Satloc or Ag-Nav. Integrated suites such as Garmin G1000 or Garmin Perspective are not typical for the S2R.

Buying & value

Used S2R values depend heavily on engine type, remaining engine and propeller time, hopper and spray-system condition, corrosion history, wing and attach-point inspections, landing-gear condition, and quality of maintenance records. Agricultural aircraft often accumulate demanding low-level cycles, so airframe history is as important as total time.

Common variants and upgrades include radial S2R-600 aircraft, PT6A-powered S2R-T models, larger-hopper configurations, modern turbine conversions, GPS guidance, stainless or composite spray equipment, upgraded pumps, and improved cockpit safety features. On the used market, the Thrush Aircraft S2R typically sits as a dedicated working aircraft: less relevant to general aviation buyers, but important for operators comparing payload, operating cost, engine support, and application productivity.