
Airplane Flight Manual Supplement
II Morrow Inc. for II Morrow Apollo SL50/SL60
2345 Turner Rd SE March 17, 1997
Salem, OR 97302 Part #: 560-1006-00
FAA Approved
Date: MAR 31 1997 Page 9 of 16
4.5 HSI / A
UTOPILOT
C
OUPLED
O
PERATION
- N
AV
S
OURCE
S
ELECTION
The installation allows for pilot selection of the navigation source for coupling to the
HSI / autopilot. The available sources that can be selected are:
• NAV1
• SL50/SL60
• NMC 2
The procedure for selecting the navigation source is as follows.
a) To select NAV1
Press the switch labeled “AUX NAV / NAV1” so that “NAV1” is illuminated.
b) To select SL50 GPS/SL60 GPS-COMM
Press the switch labeled “AUX NAV / NAV1” so that “AUX NAV” is illuminated and press
the switch labeled “SL50-SL60 / NMC 2” so that “SL50 / SL60” is illuminated.
c) To select NMC 2
Press the switch labeled “AUX NAV / NAV1” so that “AUX NAV” is illuminated and press
the switch labeled “SL50-SL60 / NMC 2” so that “NMC 2” is illuminated.
When an SL50 GPS/SL60 GPS-COMM is selected as the HSI navigation source, the HSI
course pointer must be manually turned to the desired track as indicated by the Apollo SL50
GPS/SL60 GPS-COMM. For autopilot operation, refer to the autopilot operator’s manual.
4.6 C
OMM
S
OURCE
S
ELECTION
The SL60 is selected as the active communications radio by selecting Comm 1 on the
existing audio panel.
4.7 T
O
/F
ROM
“OBS” S
ELECTION
When waypoint sequencing is suspended a desired course to or from the active waypoint
can be selected by pressing the Direct-to key twice, entering the course with the large and
small knobs, and pressing enter. Selecting a desired “OBS” to/from course when sequencing
is not suspended, will automatically suspend sequencing.
4.8 RAIM
RAIM stands for Receiver Autonomous Integrity Monitor. It provides a method whereby
the receiver can provide an integrity check, using more satellites than are needed for a
position solution. This integrity check protects you from position errors caused by failed
satellites or bad GPS satellite data. RAIM is based on an allowed limit of horizontal position
difference called the RAIM alarm limit. Two different RAIM limits are used in the Apollo
SL50 GPS/SL60 GPS-COMM corresponding to the phase of flight:
4.8.1 Enroute RAIM (2.0 nm.)
Enroute RAIM alarm limit is 2.0 nm. During the enroute phase of flight a RAIM alarm will
mean that an error of 2.0 nm. or greater, caused by bad satellite data, has been detected.
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