Terrain following runs in real time against actual ground elevation, maintaining a consistent clearance height above slopes, ridgelines, and elevation changes rather than flying at a fixed altitude above sea level. In mountainous delivery routes and complex terrain corridors, that distinction is what keeps the aircraft from clipping rising ground on the approach or descent phase of a run.

Standard obstacle avoidance is designed around the aircraft’s own footprint. The FC100 extends that logic to account for the cargo hanging below calculating clearance based on the combined envelope of airframe and suspended load rather than the aircraft alone. In the tight approach corridors and cluttered environments that delivery missions regularly involve, the difference is what prevents entanglement incidents that a conventional avoidance system would miss.

Roll Flight mode keeps the aircraft laterally level in crosswind conditions that would ordinarily induce roll improving cargo stability during transit and giving the flight controller more authority to maintain position accuracy when one or more motors experience a power anomaly. It’s a meaningful addition for operations in exposed locations where wind loading from the side is a regular factor.

When RF conditions degrade the O4 link but cellular coverage is available, the optional DJI Cellular Dongle Kit switches the video transmission path to 4G automatically no manual input required. Mountain terrain, urban RF congestion, and proximity to high-interference sources all create conditions where 4G continuity keeps the mission running when O4 alone would struggle.

When RF conditions degrade the O4 link but cellular coverage is available, the optional DJI Cellular Dongle Kit switches the video transmission path to 4G automatically no manual input required. Mountain terrain, urban RF congestion, and proximity to high-interference sources all create conditions where 4G continuity keeps the mission running when O4 alone would struggle.

The upgraded O4 video transmission ensures constant signal availability and smoother videos.

The loading point and delivery destination are configured once using the RTK-equipped controller and synced to the pilot’s unit. On subsequent runs, AR projection pinpoints both locations precisely the pilot sees exactly where point A and point B are in the physical environment without re-entering coordinates or relying on memory. For recurring delivery routes, setup happens once and operations repeat accurately from that point forward.

Four directional cameras plus a low-light FPV unit give the operator simultaneous visibility of what’s ahead and what’s happening with the cargo below the two views that matter most during transit and descent. AR flight route overlay shows the planned path in the live feed, and AR obstacle detection flags hazards as they enter the relevant zone rather than requiring the operator to identify them manually in a busy visual environment.

Winch operations — lower, release, retrieve link to waypoint actions in the mission plan. When the aircraft reaches the delivery waypoint, the winch executes the preset sequence automatically, completing the cargo handover without requiring real-time manual input. In areas with intermittent connectivity, pre-programmed waypoint actions keep delivery tasks completing even when the live control link drops temporarily.