Today i flied my MA between the mountains at 4:00PM
suddenly horizental lines shadow appeared  when i flied back  
Any body had same experience? , what could be the cause?

Just watch from 1:57 s in this video

That is the reflection of the sun off of your props

idbl_fanatic Posted at 2018-8-31 09:58
That is the reflection of the sun off of your props

ah
So what to do next time to prevent this ?

That's commonly called "prop shadows". Here are some things you can do to prevent that:

• Fly in a different direction
• Fly during a time of day when the sun is not high in the sky
• Use a lens hood
• Use ND filters to slow down the shutter speed
  

Amjad1983 Posted at 2018-8-31 10:11
ah
So what to do next time to prevent this ?

Fly a different direction, or wait until a different time

msinger Posted at 2018-8-31 10:12
That's commonly called "prop shadows". Here are some things you can do to prevent that:

thanks for great informations