Phantom 4
Pro/
Pro+ User Manuai
Return-to-Home (RTH)
Return-to-Home (RTH) function brings the aircraft back to the last recorded Home
Point.
There are three
types of
RTH:
Smart
RTH,
Low Battery
RTH,
and Failsafe
RTH.
This section describes these three scenarios
in
detail.
1
r=l=1
~
Home Point
GPS
Description
If a
strong
GPS
signal
was
acquired
before
takeoff,
the
Home
Point is
the location from which the aircraft launched. The GPS signal strength is
indicated
by
the
GPS icon
(~,;Il
).
The
aircraft
status
indicator
will
blink
rapidly when the home
pointis
recorded.
,&
•The aircraft can sense and avoid obstacles when the Forward Vision System is enabled and
lighting conditions are sufficient. The aircraft will automatically climb up to avoid obstacles and
descend slowly as
it
returns to the home point.
To
ensure the aircraft returns home forwards,
it
cannat rotate or fly left and right during
RTH
while the Forward Vision System
is
enabled.
1
Failsafe
RTH
The Forward Vision System allows the aircraft to create a real-time map of its flight route as
it
flies.
If
the
Home Point was successfully recorded and the compass
is
functioning normally, Failsafe
RTH
will be
automatically activated if the remote controller signal is lost for more than three seconds. The aircraft
will plan its return route and retrace its original flight route home. The aircraft will haver for 10 seconds
at its current location. When
it
regains signal connection it will wait for pilot commands. The Return-to-
Home process may be interrupted and the pilot given control of the aircraft
if
the remote controller signal
connection
is
re-established.
Failsafe Illustration
1 Record Home Point 2 Confirming Home Point 3 Remote Controller Signal Lost
Blinking
Green
Blinking
Green
Fast
Blinking
Yellow
4 Signal Lost Lasts (after 3 sec.) 5
RTH
(adjustable
altitude)
6
Landing
(after
hovering
for
5
secs)
>3S X
~
~~~~
-
~~e~
_
H_P~~~~~~~
-
~I:i~~e
1
0\l>
l
~
Elevate to Failsafe Altitude .
Failsafe Altitude
' Height over HP<=Failsafe Altnude
Fast
Blinking
Yellow
Fast
Blinking
Yellow
Fast
Blinking
Yellow
,&
•Aircraft cannat return to the Home Point when
GPS
signal
is
weak ( [
~
1
;111
]
displays grey) or
unavailable.
• Aircraft automatically descends and lands
if
RTH
is
triggered when the aircraft flies within a 65
feet (20 meters) radius of the Home Point. Aircraft will stop ascending and immediately return
to the Home Point
if
you move the left stick
if
the aircraft reaches 65 feet (20 meters) altitudes or
beyond during Failsafe.
• The aircraft cannat avoid obstruction during Failsafe
RTH
if
Forward Vision System
is
disabled.
lt
is
important to set a suitable Failsafe altitude before each flight. Launch the
DJI
GO 4 app,
enter "Camera" and tap
~
to set the Failsafe Altitude.
• User cannat control the aircraft while the aircraft
is
ascending to 65 feet (20 meters) from the
current altitude. However, user can press
RTH
button once to exit ascending and regain control.
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