Horizon Hobby E-flite UMX Twin Otter User Manual (English)

Questions and Answers:

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Maria EvansAug 6, 2025
Why is my Horizon Hobby E-flite UMX Twin Otter Toy having reduced flight time?
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  Patricia Woods DDSAug 6, 2025
  Reduced flight time or an underpowered aircraft can occur for several reasons: * The flight battery charge may be low, requiring a complete recharge. * The propeller might be installed backward; ensure the numbers face forward. * The flight battery could be damaged, necessitating a replacement. * Cold flight conditions can affect battery performance; warm the battery before use. * The battery capacity might be insufficient for the flight conditions; consider replacing it with a larger capacity battery.
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Brian LiAug 10, 2025
What to do if I hear extra propeller noise or vibration from my Horizon Hobby E-flite UMX Twin Otter?
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  Ashley SmithAug 10, 2025
  If you notice extra propeller noise or vibration, it could be due to: * Damaged propeller, spinner, or motor: Replace any damaged parts. * Loose propeller screw: Tighten the propeller screw. * Unbalanced propeller: Remove and balance the propeller, or replace it with a balanced one.
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Mathew PerryAug 14, 2025
What to do if my Horizon Hobby E-flite UMX Twin Otter aircraft won't respond to throttle?
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  aryanAug 14, 2025
  If your aircraft responds to other controls but not the throttle, consider these solutions: 1. Ensure the throttle stick and trim are at their lowest settings. Reset the controls accordingly. 2. Check if the throttle channel is reversed and, if so, reverse it on the transmitter. 3. Verify that the motor is properly connected to the receiver by opening the fuselage.
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Timothy ThompsonAug 19, 2025
Why do the controls oscillate in flight on my Horizon Hobby E-flite UMX Twin Otter?
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  Matthew DavisAug 19, 2025
  Control oscillations during flight, where the model rapidly jumps or moves, can be caused by: * An unbalanced propeller causing excessive vibration. Remove the propeller and rebalance it, or replace it if damaged. * A loose propeller screw causing vibration. Tighten the propeller screw.
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doconnorAug 23, 2025
How to fix a flashing LED on the receiver of my Horizon Hobby E-flite UMX Twin Otter Toy?
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  alyssawoodwardAug 23, 2025
  If the LED on the receiver flashes and the aircraft won't bind to the transmitter during binding, try these steps: * Power off the transmitter, move it further away from the aircraft, disconnect and reconnect the flight battery to the aircraft, and follow the binding instructions. * Power off the transmitter and repeat the binding process, holding the transmitter bind button or switch until the receiver is bound. * Move the aircraft and transmitter to another location away from large metal objects, wireless sources, or other transmitters, and attempt binding again.
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christine07Aug 28, 2025
Why does my Horizon Hobby E-flite UMX Twin Otter fly inconsistently?
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  leonard05Aug 28, 2025
  Inconsistent flight performance from flight to flight can occur if: * The aircraft was not kept immobile for 5 seconds after the battery was plugged in. Keep the aircraft immobile for 5 seconds after plugging in the battery. * The trims are moved too far from the neutral position. Neutralize the trims and mechanically adjust the linkages to center the control surfaces.
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Ryan Carney Jr.Aug 31, 2025
What to do if control surfaces are not neutral on my Horizon Hobby E-flite UMX Twin Otter Toy?
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  Robert LucasAug 31, 2025
  If the control surfaces are not at the neutral position when the transmitter controls are at neutral, it may be due to: * Control surfaces not mechanically centered from the factory. Center control surfaces mechanically by adjusting the U-bends on control linkages. * The aircraft being moved after the flight battery was connected and before sensors initialized. Disconnect and reconnect the flight battery while keeping the aircraft still for 5 seconds.

Horizon Hobby E-flite UMX Twin Otter Specifications

General

Approximate Flight Time	5-7 minutes
Radio System	Spektrum DSMX
Control Functions	Throttle, Elevator, Rudder, Ailerons
Recommended Environment	Outdoor
Material	Foam