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Low Noise Prop Failure
2707 18 2018-4-29
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Sulu600
lvl.2
Flight distance : 486634 ft
United States
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Had a strange failure this afternoon, perfect weather, low winds.  At end of flight, after about 20 min., Mavic Pro was hovering about 10 feet in the air and one prop came apart, causing the drone to spiral into the grass.  No damage as the impact was cushioned by the grass and three and a half working props trying to stabilize the drone.  Props were about 6 months old and only had maybe 5 flights due to winter weather here in Kentucky.

2018-4-29
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METROID
lvl.3
Flight distance : 105741 ft
Russia
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Not an original props?
2018-4-29
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Suren
Captain
Flight distance : 13498560 ft
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South Africa
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Yeh, where did you buy from. I use the same props from Dji and went out quite some distance and no issues. Always check your props before every flight it is a must
2018-4-30
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Sulu600
lvl.2
Flight distance : 486634 ft
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METROID Posted at 2018-4-29 14:45
Not an original props?

Props from DJI. The new low noise, $10 ones.
2018-4-30
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Sulu600
lvl.2
Flight distance : 486634 ft
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Suren Posted at 2018-4-30 09:47
Yeh, where did you buy from. I use the same props from Dji and went out quite some distance and no issues. Always check your props before every flight it is a must

DJI low noise props, only had maybe 5 flight on them, perfect condition, no bug nicks.  
2018-4-30
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Sulu600
lvl.2
Flight distance : 486634 ft
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Here’s a pic of the failed prop with the three good one that were on the drone:
2018-4-30
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Sulu600
lvl.2
Flight distance : 486634 ft
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https://www.dropbox.com/s/epc6pg ... 429_180055.jpg?dl=0
2018-4-30
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HedgeTrimmer
First Officer
United States
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Sulu600 Posted at 2018-4-30 16:42
DJI low noise props, only had maybe 5 flight on them, perfect condition, no bug nicks.

Strange that both blades of the one prop broke near middle.
Almost like that prop hit something or something hit prop.
2018-4-30
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SparksBird
First Officer
Flight distance : 10731690 ft
United States
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Looks like it either hit something or they were cracked possibly and you just didn't notice.  No way that would of just happened from the air.  
2018-4-30
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Woe
Captain
Flight distance : 4129268 ft
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Looks to me the same maybe hit something or got hit by something. I purchased new 8331 prop from dji as well, flown in 30mph gust with no problems.
2018-4-30
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Suren
Captain
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South Africa
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Sulu600 Posted at 2018-4-30 16:50
https://www.dropbox.com/s/epc6pg9qwjlbzy4/20180429_180055.jpg?dl=0

Are you sure you did not hit something while flying?
2018-4-30
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FlyDK
First Officer
Flight distance : 1636286 ft
Denmark
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The propeller has almost certainly hit something, to get to look like that. I would be able to accept if one propeller blade should have failed and was broken, but not both blades at the same time.
2018-4-30
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AlansDronePics
First Officer
Flight distance : 823163 ft
Guernsey
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I bought genuine DJI low noise props for my Mavic Pro and although they have performed perfectly so far, I find they are rather delicate. Tips that snag the Combo bag as the drone slides in (Very carefully). Twists and nicks as they chip against the under-body plastic loop at the rear, cross-overs that bend them when folded. For the reduction in noise which is realy a change in pitch, I will go back to the original design on the basis they are more robust.
I will definitely make a thorough check of the hub parts in future.

2018-5-1
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Locoman
lvl.4
Flight distance : 748675 ft
United States
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Suren Posted at 2018-4-30 23:40
Are you sure you did not hit something while flying?

After looking at the photos, that is exactly my first thought.

I have been using low noise props on my MP since last November, even hit a few small tree branches with them once, not even a nick. Also, I bought mine directly off the DJI web store.

I would not trust any others. There were lots of post about the low noise props that were available to buy, from third party vendors, prior to being available directly from DJI and they all seemed to have problems.  
2018-5-1
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Sulu600
lvl.2
Flight distance : 486634 ft
United States
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Locoman Posted at 2018-5-1 00:41
After looking at the photos, that is exactly my first thought.

I have been using low noise props on my MP since last November, even hit a few small tree branches with them once, not even a nick. Also, I bought mine directly off the DJI web store.

I bought the low noise props directly from the DJI store also, came fedex from Atlanta.  I would agree with you about hitting something, except that the drone was only 25 feet from me and at only 8-10 feet altitude hovering when the prop came apart.  At first I thought someone shot at it or something like that, but there was no one around.  I find it strange that the breaks patterns look the same on both sides of the prop and at about the same distance from the center hub.
2018-5-1
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chiplifter
Second Officer
Flight distance : 745180 ft
Netherlands
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Sulu600 Posted at 2018-4-30 16:50
https://www.dropbox.com/s/epc6pg9qwjlbzy4/20180429_180055.jpg?dl=0

It looks like the prop broke in the middle part. Are you sure you didn't hit anything? Good to hear your bird survived.
2018-5-2
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Hummingbird.UAV
Core User of DJI
Flight distance : 27489951 ft
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Canada
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Sulu600 Posted at 2018-5-1 16:11
I bought the low noise props directly from the DJI store also, came fedex from Atlanta.  I would agree with you about hitting something, except that the drone was only 25 feet from me and at only 8-10 feet altitude hovering when the prop came apart.  At first I thought someone shot at it or something like that, but there was no one around.  I find it strange that the breaks patterns look the same on both sides of the prop and at about the same distance from the center hub.

Not a good sign.  I have had props fail like this although not on a DJI drone.  The prop blade does have an axial torque which varies based on wind speed or forward flight speed.  The winglets on the end of the blade probably increase the torque.  If the material was off spec or a small inclusion or bubble in the blade could cause a fatigue failure.  The fact that there was a little bit of blade remaining saved the drone from a worse crash.
2018-5-2
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Locoman
lvl.4
Flight distance : 748675 ft
United States
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Sulu600 Posted at 2018-5-1 16:11
I bought the low noise props directly from the DJI store also, came fedex from Atlanta.  I would agree with you about hitting something, except that the drone was only 25 feet from me and at only 8-10 feet altitude hovering when the prop came apart.  At first I thought someone shot at it or something like that, but there was no one around.  I find it strange that the breaks patterns look the same on both sides of the prop and at about the same distance from the center hub.

Then I am at a loss for, how it could have happened. If it was me, I would send the props back to DJI and ask for an explanation how this could happen.
2018-5-7
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Picanoc Jack
First Officer
Flight distance : 10633150 ft
Canada
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got the same props, no problems so far, lets hope you find an answer on how this could happen, and let us know about it.
2018-5-7
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