As a point of caution, with knowledge gained by the unfortunate experience of others, DO NOT under any circumstances allow the fill line to be plugged with a bolt or any other piece of threaded harware.

I witnessed a friend taxi out for his first flight of the day.

He took off, and didn't even make one circuit around the field...the new JetCat P-120 flamed out on downwind, and fortunately he didn't panic, but had the presence of mind to make a good one pass landing. No harm, no foul. He did a good job...dropped the flaps and gear AFTER he knew he would make the field.....

Upon inspection, the UAT was found to be completely empty. The UAT filler was plugged with an allen bolt. Enough air leaked past the threads to allow the engine to consume the UAT fuel, and not allow suction of the fuel from the remaining tanks in the system.

I asked the question..."Where's the aluminum plug?"
His reply: "On the workbench."
I gave him a plug to install in the fill line.

Once was enough.....he's a quick study, but almost learned the lesson the hard way.


You can also use a Festo ball valve or Festo one-way check valve on the filler lineif you don't want to use the plug.

Harley Condra
BVM REP
JetCat REP