ATTI mode
ATTI mode (short for Attitude mode) is a flight mode in DJI drones where the GPS positioning and other visual positioning systems are disabled.
In this mode, the flight has to be done completely manually.
Without the aid of automatic positioning systems, a drone will not maintain a stable hover. This means that it can drift sidewards or lose altitude without pilot intervention. It will also maintain motion in any direction unless force to steer it in any other direction.In older DJI drones, ATTI mode was just another of the standard flight modes that pilots can manually switch to.
This seems to have been discontinued in more modern DJI drones like the Mavic Air 2. However, the drone can still automatically switch to ATTI mode if it detects a weak GPS signal.
Drones with ATTI mode are not as common as they once were.
Earlier drones had the unique feature of being able to turn on attitude mode,
but in the case of indoor drone technology, this capability is essential.
A drone cannot connect to satellites when flying indoors, which is where ATTI mode shines. With indoor drones being used for inspections in mines, sewers, and other indoor or confined spaces,
GPS is not always reliable enough to fly in ATTI mode.
Flyability. (2019), ATTI Mode: a guide. Flyability.com from: http://bit.ly/3OikTWg
PilotInstitute. (14 june 2021). Why Learning to Fly Your Drone in ATTI Mode is Essential. PilotInstitute.com from: https://bit.ly/3uiK6c9