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Troubleshooting Guide
Problem
Possible Cause
Solution
Aircraft will not
“throttle up” but all
other controls seem
to function.
• User did not lower throttle
trim and throttle stick prior
to initializing the aircraft.
• Lower throttle stick and throttle
trim to their lowest settings.
Propeller or motor
shaft broken.
• Crash damage
• Replace with PKZ3601 Prop with
Spinner: P-51D, or PKZ3528
Prop Shaft: P-51D.
Aircraft appears
to show significant
decrease in
flight time.
• Flight battery is not fully
charged.
• AA batteries in charger have
inadequate power.
• PKZ1035 battery has been
over-discharged multiple
times, causing damage to
battery life.
• Recharge flight battery
completely.
• Replace AA batteries in the
charger and recharge flight
battery completely.
• Replace PKZ1035 battery and
read “Battery Warnings and
Guidelines” section of manual.
Charger light stays on
after Li-Po battery is
disconnected or
remains on for longer
than 40 minutes when
charging.
• AA batteries in the charger
have inadequate power.
• Replace AA batteries in the
charger.
Aircraft appears to
have less power.
• Bushings on gearbox may
be causing friction, reducing
power.
• Lubricate the bushings of the
gearbox.
LED on Aircraft
remains flashing and
cannot be controlled
by transmitter.
• User did not wait at least 5
seconds after powering the
transmitter prior to connect-
ing the flight battery to the
Aircraft.
• Transmitter was too close to
Aircraft during the initializa-
tion process.
• Unplug, then reconnect flight
battery.
• Move transmitter (powered on) a
few feet from the Aircraft prior to
reconnecting the flight battery.
Aircraft appears to
roll, yaw, or pitch
towards a certain
direction.
• User did not re-trim the
Aircraft.
• Trim control surface using the
transmitter until airplane no
longer moves that direction.
Aircraft does not
function after
connecting flight
battery and aircraft
smells burnt.
• User may have accidentally
plugged the flight battery in
the wrong polarity.
• Replace AR6400 board
(SPMAR6400) and ensure the
RED polarity marks are facing the
same direction when connecting
the flight battery to the AR6400
board.
Age Recommendation:
14 years or over. This is not a toy. This product is
not intended for use by children without direct adult supervision.
Warranty Period
Exclusive Warranty- Horizon Hobby, Inc., (Horizon) warranties that the
Products purchased (the “Product”) will be free from defects in materials and
workmanship at the date of purchase by the Purchaser.
Limited Warranty
(a) This warranty is limited to the original Purchaser (“Purchaser”) and is not
transferable. REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS
WARRANTY IS THE EXCLUSIVE REMEDY OF THE PURCHASER. This warranty
covers only those Products purchased from an authorized Horizon dealer.
Third party transactions are not covered by this warranty. Proof of purchase
is required for warranty claims. Further, Horizon reserves the right to change
or modify this warranty without notice and disclaims all other warranties,
express or implied.
(b) Limitations- HORIZON MAKES NO WARRANTY OR REPRESENTATION,
EXPRESS OR IMPLIED, ABOUT NON-INFRINGEMENT, MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCT. THE PURCHASER
ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT THE
PRODUCT WILL SUITABLY MEET THE REQUIREMENTS OF THE PURCHASER’S
INTENDED USE.
(c) Purchaser Remedy- Horizon’s sole obligation hereunder shall be that
Horizon will, at its option, (i) repair or (ii) replace, any Product determined by
Horizon to be defective. In the event of a defect, these are the Purchaser’s
exclusive remedies. Horizon reserves the right to inspect any and all equip-
ment involved in a warranty claim. Repair or replacement decisions are at the
sole discretion of Horizon. This warranty does not cover cosmetic damage
or damage due to acts of God, accident, misuse, abuse, negligence, com-
mercial use, or modification of or to any part of the Product. This warranty
does not cover damage due to improper installation, operation, maintenance,
or attempted repair by anyone other than Horizon. Return of any goods by
Purchaser must be approved in writing by Horizon before shipment.
Damage Limits
HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT OR
CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR
COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCT,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE,
OR STRICT LIABILITY. Further, in no event shall the liability of Horizon exceed
the individual price of the Product on which liability is asserted. As Horizon
