"Jim Knoyle" wrote in message
...

"Ralph Nesbitt" wrote in message
news

A close reading of Tarver/Splapy's responses appear to indicate he is
slightly confused over/between "State of the Art Technology" circa 1960
&
present re the system being discussed.

Perhaps this "State of Confusion" is due not having worked with/being
current on this system.

No doubt about that, Ralph.

His insistence that there are 2 or more tubes connected to DADC "total"
brings up a cartoon in my mind, trying to teach Splaps how to do a
simple pitot system leak test. Has to be one of the simplest tests that
are done on an aircraft. What you do with a failed test is another story.
As much as Splaps despises the MM, I urge him to read the book.

I bet they utilize the same tester on a 777 that I used on a 707, a simple
blood pressure testing setup with a rubber hose substituting for the
cuff and an old altimeter indicator replaces the sphygmomanometer.
Slip the hose over the tube and pump the system up to a certain value
and make sure the bleed off, if any, is within spec.

Splaps yells, "Ouch!"

Aw, Splaps, I told you to read the book. You're supposed to turn off
the Pitot Heat.

JK

Perhaps not you, but many would be surprised at the number of Pitot Covers
with associated red flags have been set on fire by the Pitot Heaters.

I have seen many red faced/embarrassed mechanics standing around looking
sheepish as the FD/CFR/ARFF Group dealt with burning Pitot Covers & attached
Red Flags used to keep out/assure any local "Mud Wasps" do not attempt to
set up residence in Pitot Tubes over the years.This is especially so when
the red flag from a upper Pitot Tube burns off & the red flag catches on a
lower Pitot Tube allowing the burning remains of the cover/red flag to
"Scorch" the paint before falling off.
Ralph Nesbitt
Professional FD/CFR/ARFF Type