A-1
AIRPLANE – ACRO MODE
The ACRO mode of the X9503 2.4 system is intended for 
powered fixed-wing aircraft. It contains a host of advanced 
features that are easy to set up and use, and are designed 
to assist the pilot in realizing the full potential of the 
aircraft. These features include:
• Switch Assignments
• Flight Modes (3)
• Dual Rates/Exponential (2 or 3 sets for Aileron, 
Elevator and Rudder)
• Wing Type (Normal, Flaperon, Delta)
• Aileron Differential
• V-Tail
• Dual Channels for All Primary Flight Controls 
and Flaps
• Dual Throttles (With Independent Trims and 
Throttle Curves)
• Adjustable Trim Rates (10–100 Trim Steps)
• Elevator-to-Flap Mixing
• Aileron-to-Rudder Mixing
• Throttle Curves (2)
• Flap System (With Elevator Trim, Auto Land, 
Elevator/Flap Delay)
• Snap Roll System (4 Directions/Rates Assigned to 
Flight Modes)
• Gyro System (In-Flight Gain Selection of 3 Gains 
for up to 2 Gyros)
• Servo Speed (Independent in Both Directions – 
Eliminates Door Sequencers)
• 6 Programmable Mixers (Includes 2 Multi-Point 
Mixers)
• Fail-Safe (Hold or Predetermined Positions)
• Trainer System (Selectable Channels for Student 
Control)
• Timers (Stopwatch, Countdown, Integrated,   
Auto Start)
• Servo Monitor (Automatically Renames Channels 
According to Assignments)
In addition to the numerous features listed above, the 
X9503 2.4 provides the ability to combine these features 
during flight, using a single Flight Mode switch. This 
capability dramatically reduces the pilot’s work load, 
allowing the pilot to concentrate on flying the aircraft 
instead of worrying about how to operate the transmitter.
Flight Modes
The X9503 2.4 provides the ability to combine many of the 
above functions during flight, using a single Flight Mode 
switch. This capability dramatically reduces the pilot’s 
work load, allowing the pilot to concentrate on flying the 
aircraft instead of worrying about specific switch positions.
ACRO PROGRAMMING - PLEASE 
READ
The X9503 2.4 menus and functions are presented in 
the recommended order they should be addressed when 
setting up a new aircraft. Programming begins with 
entering the SYSTEM Menu, selecting a model, activating 
the ACRO mode, then progresses through the remainder 
of the SYSTEM Menu options, and then through the 
individual function mode programs. The descriptions are 
general in nature and provide the necessary information to 
identify the purpose of a function, allowing you to decide 
whether the function is appropriate for your application. 
Also included is specific information on making 
programming adjustments. 
ACRO - GETTING STARTED – SYSTEM 
MENU BASICS
Programming a new model begins by accessing the 
SYSTEM Menu. This is where you select models, identify 
the mode and program other high-level information. 
You can use it to activate some of the more advanced 
programming features such as Flight Modes, Switch 
Assignments, Wing Type and Dual Control information.