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* Tail gyro gain too low. Increase tail gyro gain as described [[Manuals:MB_Plus:Flying|here]] and make sure you're using the tail gyro in HeadingLock mode (using Normal-Rate mode it is nearly impossible to perform backwards maneuvers!).
* Tail gyro gain too low. Increase tail gyro gain as described [[Manuals:MB_Plus:Flying|here]] and make sure you're using the tail gyro in HeadingLock mode (using Normal-Rate mode it is nearly impossible to perform backwards maneuvers!).
* No sufficient thrust produced by the tail rotor. Check tail pitch angles. Reduce the maximum amount of available tail pitch throw at [[Manuals:MB_Plus:Setupmenu_E|Setup menu point '''E''']] to prevent the tail blades from stalling or increase the tail pitch angle if it‘s too small. Use different (larger) tail rotor blades or increase the rotor rpm.<br />
* No sufficient thrust produced by the tail rotor. Check tail pitch angles. Reduce the maximum amount of available tail pitch throw at [[Manuals:MB_Plus:Setupmenu_E|Setup menu point '''E''']] to prevent the tail blades from stalling or increase the tail pitch angle if it‘s too small. Use different (larger) tail rotor blades or increase the rotor rpm.<br />
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===The tail oscillates in horizontal position slowly and irregularly while hovering.===
* The HeadingLock gain of the tail gyro is too high. Reduce the HeadingLock gain in [[Manuals:MB_Plus:Parameter_menu_D|Parameter menu point D]] by one step and increase the tail gain on your transmitter instead.
* Due to mechanical issues the tail gyro can not work precisely. Check the linkage and mechanics for absolute free movement without hard points and use a dedicated rudder servo that is fast and accurate and that allows a high control frequency.<br />
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===During slow hovering pirouettes the helicopter is rolling out.===
The pirouette optimization setting may be wrong.
* MICROBEAST/AR7x00BX: Adjust the pirouette optimization at Setup menu point '''N''' correctly.
* MICROBEAST PLUS: Check if mounting orientation is setup correctly at [[Manuals:MB_Plus:Setupmenu_A|Setup menu point '''A''']].<br />
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{{QUOTE|'''Please do not confuse:''' A slight tilt of the swash plate when the heli is standing on the ground is absolutely normal when the so-called integrators are not fully discharged. Especially when carrying the heli or steering the sticks this can happen as the system tries to perform the necessary commands. But as the helicopter will not move as intended the system tries to keep the servo movement until the helicopter may turn. Only after approx. 30 seconds without moving the helicopter or touching the sticks, the swash will return to its normal position as the systems slowly clears its memory. The exact amount of time for this depends on the position of the thrust stick. In the middle position is the discharge at the fastest. So if possible always keep the thrust stick in center position when the heli is on the ground so that the swash plate stays leveled. Once the helicopter is airborne you will not see any of these effects as now the control loop can operate as intended. As described [[Manuals:MB_Plus:Flying|here]] to center the swashplate you can also move the cyclic stick(s) to full deflection once as this will clear integrator instantly. Only if the swash moves downright by itself to full-stop even after correcting with the sticks and only cycling power off and on resolves this problem, check that your transmitter does not send any unwanted control commands (trimming active, stick pots worn out, ...). If this is not the case please contact support as maybe there is some problem with the sensors then.}}<br />
{{QUOTE|'''Please do not confuse:''' A slight tilt of the swash plate when the heli is standing on the ground is absolutely normal when the so-called integrators are not fully discharged. Especially when carrying the heli or steering the sticks this can happen as the system tries to perform the necessary commands. But as the helicopter will not move as intended the system tries to keep the servo movement until the helicopter may turn. Only after approx. 30 seconds without moving the helicopter or touching the sticks, the swash will return to its normal position as the systems slowly clears its memory. The exact amount of time for this depends on the position of the thrust stick. In the middle position is the discharge at the fastest. So if possible always keep the thrust stick in center position when the heli is on the ground so that the swash plate stays leveled. Once the helicopter is airborne you will not see any of these effects as now the control loop can operate as intended. As described [[Manuals:MB_Plus:Flying|here]] to center the swashplate you can also move the cyclic stick(s) to full deflection once as this will clear integrator instantly. Only if the swash moves downright by itself to full-stop even after correcting with the sticks and only cycling power off and on resolves this problem, check that your transmitter does not send any unwanted control commands (trimming active, stick pots worn out, ...). If this is not the case please contact support as maybe there is some problem with the sensors then.}}<br />
===Status-LED flashes in operation mode, i.e. after landing.===
The flashing Status-LED shows that a software-reset occurred during operation.
* The receiver power supply does not seem to be sufficient. The voltage during operation dropped in a critical area (<3.5 Volts). Use a stable power supply and make sure that the wiring and plugs are dimensioned big enough and feature low contact resistance. On large helicopters we recommend to use the MICROBEAST PLUS HD or AR7300BX unit with high power input.
* A reset can be triggered due to a transfer of high voltage. Take measures to prevent static discharges.<br />
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==Further observations== <!--T:35-->
==Further observations== <!--T:35-->