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Avionic Installations Service/Parts Manual
SECTION IX
AVIONICS
WIRING DIAGRAMS
9-1.
INTRODUCTION.
This section contains all
avionic wiring diagrams necessary for circuit check-
ing the interconnect wiring used in the various avionic
options.
Refer to the T303 Service Manual for wiring
diagrams necessary to circuit check the non-avionic
wiring.
For internal circuit checking of the various
avionic boxes, refer to the appropriate Service/Parts
manual as listed in Cessna Customer Care Supplies
and Publications Catalog.
9-2.
GENERAL.
In order to familiarize the techni-
cian with Cessna Avionic Wiring Diagrams, the fol-
lowing typical wiring diagram has been cross-refer-
enced with an itemized description of each area
provided on the wiring diagram.
1
DWG. NO.
-
The wiring diagram number is
placed in this space.
The page numbering in
this section differs from that of the rest of
this manual. However, diagrams are arranged
in numerical sequence and diagram numbers
are used in lieu of page numbers.
2 PAGE: - This space is used to collect the
number of pages the wiring diagram contains.
On multiple sheet drawings the first sheet shall
list its appropriate sheet number as well as the
total quantity of sheets included in the drawing.
The remaining sheets will show the sheet num-
ber but not the total quantity of sheets. For
example: "1 of 2" on the first sheet, but
simply "2" on the second sheet.
3
TITLE
-
The title of the wiring diagram is
placed in this space.
4
SERIALS
-
The effective beginning and/or
ending aircraft serial number is entered here
to limit the usage of a part in an assembly.
The beginning serial defines the start of the
series and the ending serial denotes the last
aircraft effected. When the ending limit of
the series has not been determined, the nota-
tion "and on" is used in conjunction with the
beginning serial.
5
BLANK
COLUMN
-
This area is only utilized
when flag notes for special instructions are
needed. See item 11.
6
TERMINALS - These two columns are used to
call out wire terminals that are installed on the
ends of the wires called out in the diagrams.
The technician must figure out for himself which
terminal goes to which connector.
In some
cases the technician may have to refer to the
appropriate Avionic Service/Parts manual in
order to determine which terminal goes to the
appropriate connector or connection point
7
LG - When this column is filled in, it represents
the exact length of the wire called out. In most
cases, this is left blank because it applies to
factory installations only.
8
MATERIAL - This column is used to call out
by the use of dash numbers the gauge and color
of wires. The first dash number calls out the
gauge of wire and the succeeding dash numbers
are added to call out the color of the wire to be
used.
9
GA
-
This column calls out the gauge of the
wire used.
NOTES
A "S" suffix on a wire gauge in the "Wire
Table" denotes a shielded wire.
A "DS" suffix on a wire gauge in the "Wire
Table" denotes a double-shielded wire.
10 WIRE CODE NO. - This column calls out the
wire identification that is stamped on the wire.
11
BLANK COLUMN - This area is utilized to call
out flag notes or serials as previously mention-
ed in item 4.
12 SUPERSEDES - When the diagram makes an
existing diagram inactive or obsolete, the
number of the existing diagram is entered in
this block.
13 SUPERSEDED BY - When the diagram is made
inactive or obsolete and if a new diagram re-
places it, the number of the new diagram is
entered in this block.
9-1
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