# Changing from Multicopter to Fixed Wing Flight Mode **URL:** \ **Category:** PX4 Autopilot\ **Created:** [March 9, 2023, 8:59am UTC](https://discuss.px4.io/t/changing-from-multicopter-to-fixed-wing-flight-mode/31183 "2023-03-09T08:59:59Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![lev\_benji](https://discuss.px4.io/letter_avatar_proxy/v4/letter/l/df788c/32.png) [@lev\_benji](https://discuss.px4.io/u/lev_benji)\ **Post date:** [March 9, 2023, 8:59am UTC](https://discuss.px4.io/t/changing-from-multicopter-to-fixed-wing-flight-mode/31183/1 "2023-03-09T08:59:59Z")
Dear all, I’m currently trying to build a VTOL and I want to test the elevator and ailerons. My problem is that it seems that the aircraft doesn’t switch from multicopter to fixed wing mode. I assigned channel 7 on the RC for the transition switch parameter but nothing really happens when using the lever on the RC. Is there something I need to keep in mind? Currently, there is no airspeed sensor integrated. Could that be the issue? Thanks for your help! ---
**Author:** ![junwoo0914](https://discuss.px4.io/user_avatar/discuss.px4.io/junwoo0914/32/12312_2.png) [@junwoo0914](https://discuss.px4.io/u/junwoo0914)\ **Post date:** [March 9, 2023, 8:41pm UTC](https://discuss.px4.io/t/changing-from-multicopter-to-fixed-wing-flight-mode/31183/2 "2023-03-09T20:41:46Z")
Could you share the flight log? You can upload via Flight Review: [Log Analysis using Flight Review | PX4 User Guide](https://docs.px4.io/main/en/log/flight_review.html) ---
**Author:** ![lev\_benji](https://discuss.px4.io/letter_avatar_proxy/v4/letter/l/df788c/32.png) [@lev\_benji](https://discuss.px4.io/u/lev_benji)\ **Post date:** [March 10, 2023, 10:38am UTC](https://discuss.px4.io/t/changing-from-multicopter-to-fixed-wing-flight-mode/31183/3 "2023-03-10T10:38:46Z")
[https://review.px4.io/plot\_app?log=ad7b1d63-6c45-4397-8ad7-012f920ca999](https://review.px4.io/plot_app?log=ad7b1d63-6c45-4397-8ad7-012f920ca999) In the log messages, you can see nowhere that the flight mode is changed. And this wonders me as I used the switch and in QGroundControl it is visible that the switch works. ---
**Author:** ![junwoo0914](https://discuss.px4.io/user_avatar/discuss.px4.io/junwoo0914/32/12312_2.png) [@junwoo0914](https://discuss.px4.io/u/junwoo0914)\ **Post date:** [March 10, 2023, 3:16pm UTC](https://discuss.px4.io/t/changing-from-multicopter-to-fixed-wing-flight-mode/31183/4 "2023-03-10T15:16:20Z")
From the log it is apparent that your vehicle isn’t a VTOL (not configured to be): ![image](https://discuss.px4.io/uploads/default/original/2X/3/373c16c802005637916e77e1dc4121078b034f48.png) Also, it sees that your airframe is a ‘Hexarotor’ (Title of the log review): ![image](https://discuss.px4.io/uploads/default/original/2X/d/dc3a2b7ecd613859088dabc6893dc533b017b23b.png) Is it actually a VTOL? Did you configure it as a VTOL in Airframe selection? (Refer to: [Frame Setup | PX4 User Guide](https://docs.px4.io/main/en/config/airframe.html)) Could you share the picture of the vehicle? Just to check whether it is actually a Hybrid VTOL or not as well 😉 ---
**Author:** ![lev\_benji](https://discuss.px4.io/letter_avatar_proxy/v4/letter/l/df788c/32.png) [@lev\_benji](https://discuss.px4.io/u/lev_benji)\ **Post date:** [March 20, 2023, 6:56pm UTC](https://discuss.px4.io/t/changing-from-multicopter-to-fixed-wing-flight-mode/31183/5 "2023-03-20T18:56:04Z")
Thanks for your help at first! We actually defined an old airframe which imports the standard vtol airframe (see attached) so I would guess that the is\_vtol parameter should be non zero. Do you have an idea why the is\_vtol parameter is zero? Is there more about it than just the airframe? ![image](https://discuss.px4.io/uploads/default/original/2X/a/a4abfedc9be11efebda939f05c045f4894ee765e.jpeg)