Jump to content
Aero Precision - Premier C130 Aftermarket Support
Aero Precision - Premier C130 Aftermarket Support
Aero Precision - Premier C130 Aftermarket Support
 
jonmazz

C-12 compass

Recommended Posts

jonmazz

Good afternoon,

the problem is on an 1966 HC-130P acft. We are unable to get the #2 compass within 6 degrees of the #1 compass and the INU. We have replaced every component in the system at least twice, have re-wired the power and directional wires from the flight deck to the terminal board inside the #2 RH leading edge section, and the power wires from the terminal board to the azimuth. Duruing our compass swings, we are very close to not needing adjustment on the east to west alignment on the compensator. However, the north to south adjustment is maxed out. Have been battling this issue for a few months so any help would be great!

Share this post


Link to post
Share on other sites



tinyclark

Do you have a flux valve simulator? If so, what does it do when connected into the system? Were the new flux valves from a depot repair facility, or did they have serviceable tags on them from a mod team. Years ago, there were many flux valves turned in by mod teams that were not serviceable. 

Any chance a ferrous screw or nut is installed around the flux valve, like on the connector backshell? Was there maintenance performed around the wing tip area before this started?

Share this post


Link to post
Share on other sites
jonmazz

Just found an improper repair that was done with ferrous rivets. Will update after we fix the issue.

Share this post


Link to post
Share on other sites
tinyclark

No sweat. I've seen it before. We even had a whiskey compass error that was caused by a ferrous screw in the window frame.

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


Champion Aerospace




×