Date: 11/29/2004 22:43 Central Standard Time
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Some of the old electro-mechanical HSIs and Flight Directors had separate
flag inputs for LOC and GS (for those that had separate LOC and GS
receivers; or at least separate flag outputs), and another "Superflag" input
that controlled both flags simultaneously. Some have just a GS and a
Superflag. In that case, the GS flag input controls just the GS flag and
the Superflag controls both LOC and GS; the Superflag being tied to the LOC.
The theory being that if you lose GS, you can function in LOC-only mode; but
if you lose LOC, GS is meaningless and should be flagged as well.

It's called a superflag because it flags both LOC and GS. You need that
400mA current capability to handle all those solenoids.

Gerry

"Jerry J. Wass" wrote in message
...
Wot's a bloody Superflag???

Michalk wrote:

What are the 400mA current sink superflags used for? I've got them on
my Apollo equipment, but they only show hookups to older equipment.

What are flag pull and rate of turn voltages? On the rate of turn is the
pointer deflection voltage curve linear?

Dan, U.S. Air Force, retired