# Servos jitter/oscillate violently in Stabilized mode but work smoothly in Manual mode (VTOL) **URL:** \ **Category:** Uncategorized\ **Created:** [August 24, 2026, 1:13pm UTC](https://discuss.px4.io/t/servos-jitter-oscillate-violently-in-stabilized-mode-but-work-smoothly-in-manual-mode-vtol/49410 "2026-08-24T13:13:11Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Mehmet\_Guray\_TON](https://discuss.px4.io/user_avatar/discuss.px4.io/mehmet_guray_ton/32/21950_2.png) [@Mehmet\_Guray\_TON](https://discuss.px4.io/u/Mehmet_Guray_TON)\ **Post date:** [August 24, 2026, 1:13pm UTC](https://discuss.px4.io/t/servos-jitter-oscillate-violently-in-stabilized-mode-but-work-smoothly-in-manual-mode-vtol/49410/1 "2026-08-24T13:13:11Z")
​We are experiencing an issue with our VTOL airframe control surfaces. When bench testing the aircraft: - ​In **Manual mode** , the servos respond smoothly and precisely to RC stick inputs without any noticeable jitter or noise. - ​As soon as we switch to **Stabilized** , the servos start jittering/oscillating violently, even while the vehicle is stationary on the bench - As soon as we switch to **Stabilized mode** (or any attitude-stabilized mode), the servos start jittering/oscillating violently, even while the vehicle is stationary on the bench ---
**Author:** ![nitru](https://discuss.px4.io/user_avatar/discuss.px4.io/nitru/32/18827_2.png) [@nitru](https://discuss.px4.io/u/nitru)\ **Post date:** [August 31, 2026, 9:28am UTC](https://discuss.px4.io/t/servos-jitter-oscillate-violently-in-stabilized-mode-but-work-smoothly-in-manual-mode-vtol/49410/2 "2026-08-31T09:28:17Z")
Hi there! Can you try to recalibrate all your sensors? This sounds like a gyro issue to me. What protocol do you use to control the servos? If you are using PWM, make sure the frequency matches what the manufacturer specifies.