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Warning

Figure 15

Figure 16

When the aircraft is in 1m from the ground, the aircraft will become unstable due to 

the influence of its own blade vortex, which is called "ground effect response". The 

lower the height of the aircraft, the greater the effect of the ground effect response.

13. Introduction to the APP application and remote control function operation:

13.1 Headless mode

The front of the aircraft when the code-matching is turned on is by default the front in 

headless mode; if it is necessary to adjust the direction, please turn on the code-matching 

again, and short press the remote controller "headless mode" function key (Figure 14). 

When exiting, please tap gently press this function key again.

Special prompt: Please make sure the aircraft is aligned with the straight line and let 

the gyroscope automatically detect the straight line, and the headless mode of straight 

line flight can be realized.

Figure 14

13.2 One key return

Press the one-key return button       , the aircraft will return to the place above the geomagnet-

ic calibration position (Figure 15). (The aircraft will automatically rise to a safe altitude when it 

is flying below the safe altitude) and then land slowly. If there are obstacles during the landing, 

press the one-key return button again to turn off the return operation and avoid by the manual 

control joystick, pull down the throttle lever to land.

APP operation: Click the "one-key return" icon (Figure 16) in the APP control interface, you 

can also return the aircraft; during the return flight, click this icon again to cancel the return.

Front

Right

Rear

Left

Front

Right

Rear

Left

12

Summary of Contents for 4D-F9

Page 1: ...n s electromagnetic environment various of aero models and UAV are not allowed to fly within the range of 10 km on each side of center line and 20km on both ends of the airport runway and in the and c...

Page 2: ...cause damage to the battery and may cause unexpected dangers 13 The charging cable is not a toy 14 When charging the rechargeable battery it must be under the supervision of an adult When charging it...

Page 3: ...s 1 Screwdriver 1 Lithium battery 1 Aircraft 1 A1 A2 A1 A2 3 1 Unscrew the screw and remove the fan blade Note The fan blade is printed with letters of A1 A2 B1 and B2 in which A1 A2 B1 B2 please inst...

Page 4: ...cable provided by the factory and other charging cables cannot be used Be sure to remember to avoid accidents Warning 5 3 Charging Insert the USB port of the USB charging cable into the computer USB...

Page 5: ...returning and the return light will be off 7 Remote control battery installation AAA battery Battery cover Battery installation 7 1 Press the battery cover button with a screwdriver and remove the ba...

Page 6: ...e or IPAD and open the wireless network find the device name of 4DRC_6K_GPS in the wireless network search list and connect after connection exit the setting option Open the software icon 4DRC PRO in...

Page 7: ...ing proficient in flight operation it is necessary to close the novice mode and set the flight distance and altitude before the aircraft can fly further 10 Environmental requirements before flight Ple...

Page 8: ...p step 2 and then to the bottom step 3 and thus the frequency matching is successful the UAV lights change from flashing to being permanently on It must ensure that the power of the aircraft remote co...

Page 9: ...he tail of the aircraft upward pick up the aircraft with its nose vertically downward rotate clockwise until the front blue light and the rear red light of the aircraft are always on and the remote co...

Page 10: ...te control outward to unlock if the star search is unsuccessful it cannot be unlocked and started Figure 6 At this time the aircraft can take off normally After taking off all the indicators of the ai...

Page 11: ...common mode needs to be turned on for indoor operation 4 Or press one key take off button to take off Figure 13 1 Long press the GPS button on the remote control GPS indicator of the remote control w...

Page 12: ...raft fuselage deviates to the right When the right joystick rudder is pushed to the left the aircraft fuselage deviates to the left Before flying please perform the following steps in the above order...

Page 13: ...Special prompt Please make sure the aircraft is aligned with the straight line and let the gyroscope automatically detect the straight line and the headless mode of straight line flight can be realize...

Page 14: ...ints or continuous waypoints Figure 22 During the setting if the track waypoints are too dense you can click the delete icon to delete all the waypoints Figure 23 After setting of the waypoint click t...

Page 15: ...again the orbit flight will end Figure 30 13 6 GPS follow mode In GPS mode click the More Functions icon Figure 31 in the APP control interface to enter the follow Figure 32 The aircraft will use the...

Page 16: ...the screen or switch the filter effect and you can also turn the joystick on off to control the direction and altitude of the aircraft 14 FAQ and solving guidelines Question The aircraft indicator fl...

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