Hi Kevin, Bob

No one desiring speed or efficiency cross country in an Ercoupe flies "open cockpit" at 6,000+. Beyond that, the seal of the exhaust stack-to-muffler joints in MANY Ercoupes leak. The engine compartment is of higher pressure than the cabin, and a little carbon monoxide goes a long way toward progressive incapacitation of occupants unaware.

It's true that normally the air change within the cabin area is sufficient that there is no problem. It is also true that a clamp can fail or seam open further in flight without occupant awareness. We literally bet our lives each time we fly without the ability to monitor the level of carbon monoxide present at any given time in the cabin.

When it is obvious I can't win, I don't gamble.

Regards,

WRB

--

On Mar 10, 2010, at 15:00, Bob Swinney wrote:



If your coupe is like mine there is more than adequate ventilation to prevent the CO problem. Also I have used the pellet type for as many years as it has been available and I am still here. I will not install another instrument, regardless. What is next with these knee jerk govenment bureaucrats?
 
Bob

On Mar 10, 2010, at 15:00, Kevin wrote:

And just how necessary are they in an open cockpit aircraft?

Kevin1



--- In [email protected], William R. Bayne <ercog...@...> wrote:


The Devil made me ask this question  ;<)

Are these instruments TSO or FAA/PMA?

WRB

--


On Mar 10, 2010, at 09:58, Bill BIGGS wrote:

[Attachment(s) from Bill BIGGS included below]

 Just FYI
 Bill
 
 Date: Wed, 10 Mar 2010 09:17:38 -0600
From: usfaa...@...
Subject: Engine Exhaust (ATA code 78) and Carbon Monoxide Detectors
(ATA code 25) - General Aviation
To: webacr...@...

 CE-10-19 - Small Airplane/ All/ All Models

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