Alt Circuit Breaker Popped Twice Yesterday

[lrobichaux]

I’m working to download the actual data file and will post that up too.

Will load up CSV files later this afternoon.

 

[Cubonaut875]

Thread 'A look at FlySto.net - amazing tool for flight analytics'

Apr 6, 2025

FlySto — Flying stories you can trust

FlySto — innovative avionics log and flight data analysis software

flysto.net

• Neal
• Replies: 13
• Forum: Articles of interest (or videos)

That's it - thanks!

 

[lrobichaux]

Three files attached. The file dated 12/15 ending with "KDTO" is the first flight of the day with no abnormal electrical indications. The file dated 12/15 ending in "KRPH" is the last flight of the day during which the ALT circuit breaker popped. Abnormal indications can be seen for approx. 18 minutes with VOLT1 at which time the CB popped. CB was reset which resolved the abnormal voltage indications for the few minutes left in the flight.

Lastly, the file dated today ending in "30F" reflects a lengthy run-up this morning after inspecting the alternator connection, battery connections and connections at the firewall terminal block (all were normal). This morning, I did as good of a visual inspection as possible - no abnormalities were noted. Note that I pulled the ALT CB during this run-up today just to observe the VOT1 indication with the breaker pulled. All appeared normal.

Any ideas would be much appreciated.

 

[Neal]

The files didn't attach, please try again.

Bummer when you can't find the "smoking gun."

 

[lrobichaux]

Had to change file name extension. See attached.

 

[Neal]

What was the original file extension and I'll see if I can fix up the forum'ware for future uploads.

 

[lrobichaux]

Yes, the website does not accept CSV files. I converted to Excel and it accepted the files.

 

[Neal]

CSV is allowed now.