Mysterious Malfunction, Crash & PARM LOG Interpretation for P4P V1 (SOLVED)

[AllenArmy]

txt flight log file

 

[AllenArmy]

DJI Flight Log Viewer - PhantomHelp.com

 

[AllenArmy]

Here's a link to the flight log:

DJI Flight Log Viewer - PhantomHelp.com

Your Flight Log Viewer is absolutely amazing! Great job. I noticed at the 1-minute and 4.3-second mark that the “propeller fell off”, which must have been when it experienced a catastrophic break. It seems like there might have been a stress fracture or an imperceptible crack in the propeller that wasn't visible during the pre-flight inspection. Regardless of the cause, kudos to you for developing such a fantastic app, @msinger!

Thank you for your patience and assistance. I really cannot thank you enough!! I have been working on this puzzle for a bit now and it's nice to have some closure. This old P4P V1 has been good to me!! Now, I need to figure out what I am going to do with it.

 

[msinger]

Here are some key points in your flight:

• 2.3s: Auto take off initiated
• 14.7s: Downlink dropped (this continued several more times during the next 44 seconds)
• 1m 4.3s: Aircraft recorded a prop fell off
• 2m 9.5s: "Your mobile phone Wi-Fi is using the 5.8 GHz frequency and conflicting with the remote controller. Please disable Wi-Fi or change Image Transmission Settings" message displayed (which might explain why the downlink kept disconnecting)

And some other findings (according to the log data):

• The home point was never marked
• 0 satellites for the entire 2m 32s flight
• No record of an attempted ascent prior to the prop falling off (both sticks were in the center position for 99% of the flight)

While you experienced several issues during this flight, it seems that prop was damaged at some point pre-flight and ultimately led to it detaching mid-flight.

 

[Starz]

I would like to see pictures of the opposite sides of the props please.
From what I’m seeing in the previous pictures, I wondering if they are other than DJI products.

 

[AllenArmy]

I would like to see pictures of the opposite sides of the props please.
From what I’m seeing in the previous pictures, I wondering if they are other than DJI products.

 

[Starz]

I do not see the DJI name on that prop. The underside was a clue as I don’t see the typical mold marks that are always there. These aftermarket props are not acceptable for anything that I have in the air. Look closely at this one(definitely DJI)to see the mold marks and the DJI name and prop size that should be there.
I’m not 100% certain this was your issue, but I have always thought the plastic material used by other than DJI makers do not meet specifications needed to insure longevity. Age of your props may be a factor in this unfortunate instance.