V-22 Osprey VTOL
EN
14
Problem
Possible Cause
Solution
Aircraft will not respond
to throttle but responds
to other controls
Throttle not at idle and/or throttle trim too high
Reset controls with throttle stick and throttle trim at lowest setting
Throttle servo travel is lower than 100%
Make sure throttle servo travel is 100% or greater
Throttle channel is reversed
Reverse throttle channel on transmitter
Motors disconnected from ESCs
Make sure motors are connected to the ESCs
Extra propeller noise
or extra vibration
Damaged propeller or motor
Replace damaged parts
Propeller is out of balance
Balance or replace propeller
Prop nut is too loose
Tighten the prop nut
Reduced fl ight time or
aircraft underpowered
Flight battery charge is low
Completely recharge fl ight battery
Propeller installed backwards
Install propeller with numbers facing forward
Flight battery damaged
Replace fl ight battery and follow fl ight battery instructions
Flight conditions may be too cold
Make sure battery is warm before use
Battery capacity too low for flight conditions
Replace battery or use a larger capacity battery
Aircraft will not Bind
(during binding) to
transmitter
Transmitter too near aircraft during binding process
Move powered transmitter a few feet from aircraft, disconnect and reconnect fl ight
battery to aircraft
Aircraft or transmitter is too close to large metal
object, wireless source or another transmitter
Move aircraft and transmitter to another location and attempt binding again
Flight battery/transmitter battery charge is too low
Replace/recharge batteries
Bind switch or button not held long enough during the
bind process
Power off transmitter and repeat bind process. Hold transmitter bind button or switch
until receiver is bound
Aircraft will not connect
(after binding) to
transmitter
Transmitter too near aircraft during connecting process
Move powered transmitter a few feet from aircraft, disconnect and reconnect fl ight
battery to aircraft
Aircraft or transmitter is too close to large metal
object, wireless source or another transmitter
Move aircraft and transmitter to another location and attempt connecting again
Aircraft bound to different model memory
(ModelMatch
TM
radios only)
Select correct model memory on transmitter
Flight battery/Transmitter battery charge is too low
Replace/recharge batteries
Transmitter may have been bound to a different
aircraft using different DSM protocol
Bind aircraft to transmitter
Control surface does not
move
Control surface, control horn, linkage or servo damage Replace or repair damaged parts and adjust controls
Wire damaged or connections loose
Do a check of wires and connections, connect or replace as needed
Transmitter is not bound correctly or the incorrect
airplanes was selected
Re-bind or select correct airplanes in transmitter
Flight battery charge is low
Fully recharge fl ight battery
Flight controller is damaged
Replace the fl ight controller
Transmitter is set to Multirotor Flight Mode
Set the transmitter switch to Airplane Flight Mode
Controls reversed
Transmitter settings are reversed
Perform the Control Direction Test and adjust the controls on transmitter appropriately
Servos plugged into the wrong ports
Verify the plug assignments based on the Receiver, Servo, and ESC Connection Diagram
Oscillation
Damaged propeller or spinner nut
Replace propeller or spinner nut
Imbalanced propeller
Balance the propeller
Motor vibration
Replace parts or correctly align all parts and tighten fasteners as needed
Loose fl ight controller
Align and secure the fl ight controller in fuselage
Loose aircraft controls
Tighten or otherwise secure parts (servo, arm, linkage, horn and control surface)
Worn parts
Replace worn parts (especially propeller, spinner nut or servo)
Irregular servo movement
Replace servo
Inconsistent fl ight
performance
Trim is not at neutral
If you adjust trim more than 8 clicks, adjust the clevis to remove trim
Sub-Trim is not at neutral
No Sub-Trim is allowed. Adjust the servo linkage
Aircraft was not kept upright and immobile for
5 seconds after battery connection
With the throttle stick in lowest position, disconnect battery, then reconnect battery
and keep the aircraft still for 5 seconds
Aircraft will not transition
to or will not stay in
airplane flight mode
Low battery. Low Voltage Cutoff is being triggered.
Recharge fl ight battery or replace battery that is no longer performing
Aircraft yaws and/or
rolls during transition
from multirotor to
airplane mode
Motor nacelles out of alignment
or not transitioning evenly
Go to the
Fine Tuning Nacelle Alignment
section for information
on adjusting the nacelles
Aircraft immediately flips
or crashes on throttle up
Main propellers installed incorrectly
Verify the propellers are mounted in the correct locations and the motors are
spinning the correct direction
Troubleshooting Guide
