Please check the small P4 Plastic Probfastlockthings on your Birds and stay secure the screws are strong mount.
I habe checked this today bevor start an one of this importand things was a bit loosen.
Check this bevor Start of proper mount and in good condition.
Hold the Motor and take the plastic right and left to check is it good mount and screws are fit good.
Or is remount with "Loctite" better is the Question for DJI?!
Lose a Prob in Air is a horror !
greets
a old man

Thanks,  i checked mine and 2 out of four where a bit loose.

There was a thread yesterday of a crash and it looked like the plastic mount had come off mid flight..

visitkans Posted at 2016-5-16 22:25
There was a thread yesterday of a crash and it looked like the plastic mount had come off mid flight ...

I have it read and now i'm very carefull with my bird.Endcontrol issues are the problem i think.

ur right cause quick released plastic is damaged many times  

SajidShah Posted at 2016-5-16 23:34
ur right cause quick released plastic is damaged many times

This is i think an effekt  when Probs are taking the ground or other .
Change it on contact with any things there are not Air!
I have Spare Part No 51 allways in pocket but only four of six screws have the blue glue that take the screws are secure.Endcontrol is the issue,i think.
Small plastic big effekt.

Loctite is my new Friend.

Thanks for this information.
I just checked my P4 which has less than 4 hours flying time on it.
One of the 4 prop holders was slightly loose, probably less than 0.1mm play, but it had enough to feel a slight click when rotating the prop holder while holding the motor.
I tightened the three screws a little until the play had gone.

i checked mine and one was a tad loose as well (will check them from time to time now) i only have around 10hrs on mine

Thanks for your info. I have checked my phantom 4, the front right mount was loosen so i have tightened it

Take a fine permanent marker and make a line across the screws and plastic.   We do this on aircraft to have a visual inspection to see if the screws are coming loose.  It's called torque stripes.

A picture of the screw or whatever it is called to be tighten would be helpful.

Thanks and regards from Switzerland

Do not use Loctite on your Phantom.

There have been many reports of it melting the plastic.

Nelsongc1@msn.c Posted at 2016-5-17 13:43
Take a fine permanent marker and make a line across the screws and plastic.   We do this on aircraft ...

Very nice tip, love this,

Have ordered the loctite threadlocker, will apply that and have the lines made.

timmer1 Posted at 2016-5-17 14:11
Do not use Loctite on your Phantom.

There have been many reports of it melting the plastic.

You do t put loctite on the plastic, i guess its the loctite threadlocker blue thing to be used on the threads, its quite common in rc toys

What tool do you use to tighten the screws ? And what size ?

malvern Posted at 2016-5-17 14:56
What tool do you use to tighten the screws ? And what size ?

1.5mm hex allen key

visitkans Posted at 2016-5-17 14:57
1.5mm hex allen key

Thanks for that.

Yes some pictures would be great

The 3 screws you see there that holds the white plastic in place, that can loosen over time due to vibration

visitkans Posted at 2016-5-17 23:12
The 3 screws you see there that holds the white plastic in place, that can loosen over time due to v ...

Thanks for the picture, this helps!

Great post, thanks OP! 96 flights with my P4 and it never occurred to me to check those. Upon my inspection I found 3 loose screws and snugged them up but it will be part of my regular routine and I also marked the screws with a sharpy thanks to Nelsongc1 so this will be an easy visual inspection...another thing I do on all my vehicles when wrenching on them but also never occurred to me to mark my birds screws....

Cheers!

I believe that it is a good idea to replace the proper holders and props after 25-30 hours of flight.  They are plastic and probably take a lot of abuse taking them on ond off as well as in flight which can develop micro fractures that can't be seen.  They are 3 bucks per pair from DJI and cheap insurance.   I'm thrilled with my Phantom 4 and tightening and checking all the components is part of the hobby, no bird is maintenance free.  

Nelsongc1@msn.c Posted at 2016-5-17 16:43
I believe that it is a good idea to replace the proper holders and props after 25-30 hours of flight ...

I was actually thinking about every 100 flights which at 20 minutes a flight is about 30hrs which I'm close to now. I bought a bunch when they came out just to have them when the need arose.

Double post...

Cale262@gmail.c Posted at 2016-5-18 07:00
I was actually thinking about every 100 flights which at 20 minutes a flight is about 30hrs which  ...

That sounds like a good number.  They come with new screws as well which is nice as well.  

I found one loose as well.  A warning to periodically check the tightness of these screws should be in big bold letters in the DJI docs.  If this was the cause of that recent 'lost prop' crash, and the problem is as common as it seems to be, I expect there will be more crashes.

Thanks mate.

I checked them. No one was loose, but all were not very strong  thighten

Nelsongc1@msn.c Posted at 2016-5-17 18:17
That sounds like a good number.  They come with new screws as well which is nice as well.

Yes they do come with new screws and I can see that each screw comes with blue loctite on the threads, maybe something they didn't come with one some birds from factory.

Less than one hour flight time with P4 and five screws were lose on three motors.    One screw required 1.25 turns to correctly tighten and no I did not over torque prop mounting plate screws.   Will add check prop mounting plate screws to preflight list.  Thank you!    Why is this required routine maintenance excluded from DJI documentation for safe operation of aircraft?

What do you think about these :
http://s.aliexpress.com/ZvUR36b2

I received update from one of the dealers that the carbon fiber propellers for p4 are still mature and not stable.

thanks for this
gonna check mine today

Would like to add to the screw loose debate that I had 2 screws over 1 turn loose with 3 others starting to loosen with less than 5 hours flight time. Well done OP for bringing attention too it. I appreciate it is a tight line between too much thread lock and too little.  A touch more perhaps DJI as the overall locking system and improved safety of the completely snapping props in impact is excellent. Be a shame to have to change it because of a few screw loose incidents.,  

Hi guys, useful thread. However was wondering about internal, inside the drone do we open it up to check if there is any cable that gone loose etc ?.??.

Regards,kw

All mine were loose.
Thx for posting this thread

Checked mine and thankfully no movement. Will be carrying allen keys about from now on though.

Hi,
What about if the propellers holder is solid and has no freedom when trying to move it left and right when holding the motor, but when attaching the propeller and trying to move it left and right when holding the motor steady,
The propeller itself has some freedom..?
Is it dangerous?
3 of the propellers doesn't have freedom and and one dose.
Did it happen to you too?   

All 4 was loose.. thanks for the tips.

Just checked mine and found two loose after only 3 flights. So will also make this a regular check.