We just received two large DJI AGRAS units for repair. One arrived with antenna, front cowling, and FPV apparatus issues; the other has a faulty pump/hose/sprayer system. Our team is equipped to diagnose, source OEM parts, and complete the repairs, then verify with flow and flight tests. If you operate agricultural or industrial drones and need dependable service, Lone Star Drone can get you back in the field!

Why Heavy-Lift Ag Drones Need a Different Repair Bench

AGRAS-class aircraft aren’t “big Phantoms.” They carry chemicals, have complex fluid circuits, beefier power systems, and comms hardware that must survive harsh environments. Fixing them requires:

• Decon & safe tear-down to keep residue out of electronics

• Fluid pressure (not just “does it spray?”)

• Continuity & RF tests for antennas/FPV links

• Load & hover tests with proper calibration

Case Study 1 — Communications & Front End (Antenna, Cowling, FPV)

We just recieved an AGRAS that tangled with a large, heavy bird mid-operation. It rolled into our shop with a shaky FPV feed, intermittent link quality, and a visibly battered front end. On intake, our inspection showed a cracked, misaligned cowling that was stressing the FPV camera mount, antenna connectors with signs of water ingress and light corrosion that compromised shielding, and an FPV harness developing an intermittent break right at the bend near the gimbal.

Our plan is straightforward and thorough: replace the cowling and restore proper standoff spacing, then clean and re-terminate the RF connectors, swap the compromised lead, and reroute the line to reduce strain points. We’ll install a new FPV camera harness, verify orientation and focus, bring firmware current, and run a link check on the bench. After that, we’ll flight-test to confirm stable video and healthy command/telemetry.

Once complete, this aircraft will leave with a solid FPV feed, consistent link metrics, and a reinforced front end ready for work.

Case Study 2 — Pump / Hose / Sprayer System

We just recieved a second AGRAS with classic application issues: uneven pattern, low flow, and periodic pump alarms. On the bench, our checks confirmed one the pump system needs repaired/replaced.

Once complete, the aircraft will return to service with an even spray pattern, correct liters-per-minute, no leaks, and no alarms across the envelope - ready for the field.

Our AGRAS Diagnostic Workflow

1. Intake & Decon – drain tanks, residue wipe-down, battery inspection.

2. Powertrain check – ESC/motor temps, vibration, fasteners, landing gear.

3. Comms & sensors – antennas, GNSS, FPV, harness continuity, compass/IMU status.

4. Fluid system – pumps, filters, hoses, check valves, nozzles, leak/flow tests.

5. Firmware/config – update, calibrate, log review, error history.

6. Ground & hover tests – hover, control checks, spray pad verification (if applicable).

7. Report – findings, parts list, photos, and a service log for your records.

Turnaround & Parts

• Diagnostics: typically 1–7 business days once the aircraft is in our shop.

• Repairs: depends on parts availability; certain parts are widely available while more specialized parts can be harder to come by and take longer to arrive to our shop.

• We’ll give you a written/verbal estimate and won’t proceed without approval.

Preparing your AGRAS for service

• Drain & rinse tanks/lines; note chemicals used.

• Remove loose payloads/accessories you don’t want shipped.

• Batteries: ship in compliance with carrier rules; include at least one battery at 30 - 40% for testing.

• Include your controller, cables, and nozzles if the issue is spray/controls related.

• Add a brief problem description and any error codes you’ve seen.

Who We Help

Whether you run a single spray rig or manage a fleet, if it’s AGRAS-class or any similar heavy-lift platform, we can service it. Here’s who benefits most from our bench, parts pipeline, and test procedures:

Row-Crop & Specialty Growers

From row crops to orchards, vineyards, turf, and greenhouse operations - downtime during the season is brutal. We handle pump/nozzle, hose replacements,antenna repairs, and firmware/config audits.

Municipal & Industrial Spray Teams

Vector control, right-of-way vegetation, water bodies, odor control - your environments are harsh on fluid circuits and comms. We decon on intake, replace pumps/hoses/fittings. We can also review telemetry and flight logs to support compliance and after-action reporting.

Land Managers, Ranches, and Forestry

Brush control and spot treatments are hard on gear. We fix landing gear, arms, ESCs/motors, and the spray side (filters, regulators, valves) and can harden cable routing and strain relief for off-road transport.

Construction, Utilities, and Environmental Services

If you use heavy-lift drones for washing, de-icing, dust control, or remediation, we service those payloads too - electrical harnesses, connectors, pumps, reels, and controllers - and validate performance before you head back to site.

Typical Work We Perform

• Fluid systems: pumps, hoses, manifolds, filters, check valves, nozzles, leak/flow tests, decon & flush

• Electrical/comms: harness repair, RF/antenna work, FPV and link stability

• Airframe/power: arms, landing gear, motor/ESC diagnostics, fastener torque & vibration checks

• Software & docs: firmware updates, calibrations, error-log review, and a service report for your records

Ready to get back in the field?

Bring the aircraft to our shop or call to set up shipping. We’ll do a fast diagnostic, give you a parts plan and timeline, and keep you updated through repair and testing.

Lone Star Drone – Repair & Service2301 E Lamar Blvd, Ste 160, Arlington, TX

Mon–Fri, 9–5