Cessna 172SPHUSR05 Pilot Operating Handbook page 316

SECTION 9 - SUPPLE M E NTS
SUPPLE M E NT 5
GPS NAVIGATION SYSTEM (IFR)
THE KLN
I NSTRUME NT
OPERATIONAL
U PG RADED TO "ORS 02" OR LATER, AS READ
ON THE POWER-ON PAGE, AND THE HOST
SOFTWARE IS U PGRADED TO " HOST 00880-
0004" OR LATER, AS READ ON THE KLN 89B
OTH 6 PAGE.
The KLN 89B G PS (Global Positioning System) is a three­
dimensional precision navigation system based on 24 earth orbiting
satellites. Receiver Autonomous Integrity Monitori ng (RAIM) is a
function that every I FR-certified GPS receiver must contin uously
perform to assure position accuracy. RAIM is available when 5 or
more of these satellites are in view, or 4 satellites are in view and a
barometrically corrected altitude input from the airplane's altimeter
is made. Annunciation is provided if there are not enough satel lites
in view to assure position i ntegrity.
Operational guidance for the KLN 89B GPS Navigation System is
provided with the Bend ix/King KLN 89B Pilot's Guide (supplied with
the airplane). This Pilot's Guide should be thoroug h ly studied and
VFR operations conducted so that you are totally familiar with the
G PS system of n avigation before actually using this equ ipment in
I FR conditions.
85-4
FAA APPROVED
-
SUPPLEMENT
BENDIX/KING KLN 89B
SECTION 1
GENERAL
A
WARNING
89B IS NOT AUTHORIZED
APPROACHES
REVISION
CESSNA
MODEL 1 72S
FOR
U N LESS THE
STATUS IS
May 2 1 /99