On Sun, 14 Aug 2005 08:03:47 -0400, "Kyle Boatright"
wrote:


"Roger" wrote in message
.. .
snip

OTOH isn't there a requirement for one hour on the engine before it
takes to the air, or is that before the FAA inspection and sign off?

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

I've heard of the 1 hour engine run requirement, but I've never found it in
any official (FAA) or reputable (EAA) source. I am aware of some DAR's who
require it.

My DAR didn't mention it.

Personally, if I had access to a test stand with proper cooling set-up, I'd
run a new engine at least an hour. However, installed on an aircraft, and
without a test club, lengthy engine runs on the ground are not recommended
per Lycoming's new or remanufactured engine break-in procedure.

On my rebuild in the Deb they told me to take minimum taxi time, get
it in the air and run the crap out of it. The first hour was running
80 to 85% with a lot of power changes. The rings seated in just a few
hours. I don't remember just how many now, but it wasn't long.
Although they were concerned with temps (which weren't a problem) in
this particular case it sounded more like they were interested in the
ring seating. It worked. Nearly a 1000 hours later and it still uses
less than a pint in 25 hours.

That puts the way you run the engine at odds with the way you want to
start your test flights, so likewise, I'd prefer to run the engine in
on a test stand, but unfortunately I don't think that is going to
happen.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

KB