Elite PI-121, Operator'S Handbook Manual

Page: 127 / 390

105
CHAPTER 2: Instructor / Operator’s Station (IOS)
NOTE: By creating a dynamic (changing) pressure over
time scenario it is easy to demonstrate the “Going from
a HIGH to a LOW lookout below” adage. This is great for
instructors who want to make sure their stu dents always
perform a thorough ap proach briefi ng (check ing the ATIS
etc.). Simply set your “To” Al tim e ter val ue low er than your
“From” Altimeter value, then set in a time in ter val for the
pres sure change to take place. As the pressure drops, the
student will have to descend to maintain indicated al ti tude.
If the student doesn’t ask you for the local al tim e ter setting
or tune in the ATIS, he/she will get a big surprise on the
ap proach.
TEMPERATURE
Temperature in degrees Celsius can be adjusted by
click ing the UP and DOWN arrow buttons. Note that this is
NOT setting the temperature di rect ly but is ac tu al ly adding
to or subtracting from the ISA (
I n ter na tion al S tandard
A t mo sphere) val ues. If your per for mance tables call for an
ISA + or - (X°) day sim ply dial in X° to increase or decrease
the OAT tem per a ture by X° amount.
At the lower-left of the METEO Page you will fi nd a grouping
of func tions that are applicable to the en tire METEO Page
as opposed to the control of in di vid u al weather parameters
described previously. These functions are described
in further detail starting with the section on “Saving and
Loading METEO Files” on page 254.
STRUCTURAL ICING
All instrument pilots are familiar with the dangers of icing
and the coincident degradation of aircraft per
for mance
associated with the accretion of ice on an air craft. Various
insidious aspects of icing can creep into an otherwise
“normal” fl ight and make for a really bad day. Increased