# Arming issue

**URL:** <https://discuss.px4.io/t/arming-issue/1733>\
**Category:** Uncategorized\
**Created:** [November 13, 2016, 1:55am UTC](https://discuss.px4.io/t/arming-issue/1733 "2016-11-13T01:55:36Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Glen\_Leeon](https://discuss.px4.io/letter_avatar_proxy/v4/letter/g/ac8455/32.png) [@Glen\_Leeon](https://discuss.px4.io/u/Glen_Leeon)\
**Post date:** [November 13, 2016, 1:55am UTC](https://discuss.px4.io/t/arming-issue/1733/1 "2016-11-13T01:55:37Z")

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When I arm my copter, motors spin up but then after about 2 seconds, they shut off and copter disarms, followed by 2 beeps. Just happened all of a sudden. Battery I ran just before was fine. Flight went normal.

Any advice or guidance will help.  
Thanks.

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**Author:** ![Nicolas](https://discuss.px4.io/user_avatar/discuss.px4.io/nicolas/32/4467_2.png) [@Nicolas](https://discuss.px4.io/u/Nicolas)\
**Post date:** [November 13, 2016, 8:10pm UTC](https://discuss.px4.io/t/arming-issue/1733/2 "2016-11-13T20:10:16Z")

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Sounds like you have auto disarm on land enabled. In QGC, check the safety tab at the bottom.

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**Author:** ![Glen\_Leeon](https://discuss.px4.io/letter_avatar_proxy/v4/letter/g/ac8455/32.png) [@Glen\_Leeon](https://discuss.px4.io/u/Glen_Leeon)\
**Post date:** [November 13, 2016, 10:21pm UTC](https://discuss.px4.io/t/arming-issue/1733/3 "2016-11-13T22:21:41Z")

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Hey Nicholas,  
I did too. I must have enabled that last time and didn’t remember.  
Thanks heaps. I was bewildered.

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**Author:** ![Glen\_Leeon](https://discuss.px4.io/letter_avatar_proxy/v4/letter/g/ac8455/32.png) [@Glen\_Leeon](https://discuss.px4.io/u/Glen_Leeon)\
**Post date:** [November 14, 2016, 8:26am UTC](https://discuss.px4.io/t/arming-issue/1733/4 "2016-11-14T08:26:28Z")

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Can someone explain when to use this auto disarm on landing feature. I had it enabled, but as soon as I armed, it would disarm and shut down all motors. Was hoping it would only shut down if I was in an auto mode. Eg flying missions or doing an RTL? But still allow to be flown in rattitude or across modes.

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**Author:** ![Anil\_m](https://discuss.px4.io/user_avatar/discuss.px4.io/anil_m/32/16808_2.png) [@Anil\_m](https://discuss.px4.io/u/Anil_m)\
**Post date:** [August 5, 2024, 9:22pm UTC](https://discuss.px4.io/t/arming-issue/1733/5 "2024-08-05T21:22:25Z")

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Once you have armed , raise the throttle stick little above. So that fc pre function will consider it is not in idle mode and will not disarm