Pitot-static system

From the PA-28-151 Cherokee Warrior, PA-28-161 Warrior II, PA-28-161 Warrior III Airplane Maintenance Manual, revision PR950228, dated 2/28/95 (imagine that), page 2C6:
The static air system consists of interconnected static ports on the underside and aft side of the (pitot) static mast.
Click to expand...
Plus, I've seen the thing cut cross section, the holes on the bottom and back both connect to the same tube/line, meaning that if one becomes plugged, the other should be able to provide static source indications. It also says:
Pitot and static lines are drained through separate drain valves on the left lower side of the fuselage interior.
Click to expand...
Going through all the troubleshooting procedures, those drains are never mentioned again. The Warrior III AFM says basically the same thing, except it says "can be" instead of "are". In section 4, Interior Preflight, it also says:
Open the pitot and static drains to remove any moisture that has accumulated in the lines.
Click to expand...
Finally, we've got the alternate static source, which acts like any other alternate static source.

So, I don't think I really answered any of your questions, mostly because I still don't know what they are. But at least I gave you some sources to show what others have already said :D
 
shdw said:
Wonderful information bud, I personally appreciate it. I always thought the bottom hole was a drain hole, guess I was wrong. Thanks again.
Click to expand...

I don't think there's any reason it couldn't act as a drain hole, so i don't think you're wrong. It's just a different way of impletmenting the same system. Cessna does it with ports on the left and sometimes right of the forward fuselage, cirrus does it with holes on the left and sometimes right of the aft fuselage. Six of one, half dozen of the other.
 
XcalibeR said:
I don't think there's any reason it couldn't act as a drain hole, so i don't think you're wrong. It's just a different way of impletmenting the same system. Cessna does it with ports on the left and sometimes right of the forward fuselage, cirrus does it with holes on the left and sometimes right of the aft fuselage. Six of one, half dozen of the other.
Click to expand...

Not quite; fuselage static ports aren't (usually) heated.
 
You must log in or register to reply here.
Back
Top