I would guess that the old rules apply if the boots have not been replaced
since the 1930s, which is highly unlikely. After the Woodlawn accident, the
FAA issued AD's for about 20 turboprops, and the AD called for inflation at
the first sign of ice.

Bob

"T o d d P a t t i s t" wrote in message
...
"Bob Gardner" wrote:

As reluctant as I am to get involved in a mxmanic thread, the information
you provide is outdated. Goodyear says that it was originally based on the
DC-3, which had large tubes and low air pressure. It is now officially an
Old Wives Tale. The approved procedure today is to turn on the boots at
the
first sign of ice.

The last aircraft I was in that had boots, and the last
manual I read about use of the boots was ... you guessed it,
a DC-3. Thanks for the correction. Do you know if the OWT
about delaying use a valid one for the DC-3 in view of the
large tubes and low pressure? I don't actually recall
anything one way or the other in the systems manual, but I
wasn't paying a lot of attention to de-icing.

--
Rule books are paper - they will not cushion a sudden meeting of stone and
metal.

- Ernest K. Gann, 'Fate is the Hunter.'