Cessna T303 Installation, Service & Parts Manual page 6

Avionic Installations Service/Parts Manual
INTRODUCTION.
This avionic installations service/parts manual has
been prepared to aid you in easily and quickly identi-
fying avionic parts and equipment on the model cov-
ered herein. The information in this manual is based
on information available at the time of publication.
This manual is divided into the following 9 Sections
to aid you in rapidly locating the appropriate avionic
system, associated equipment and wiring diagrams.
Section 1 - Cessna Crafted Avionic Installations
Section 2 - Vendor Crafted Avionic Installations
Section 3 - Antenna Installations
Section 4 - Audio Equipment Installations
Section 5 - Miscellaneous Avionic Equipment
Installations
Section 6 - Avionics Location Loading Charts
Section 7 - Autopilot Rigging Procedures
Section 8 - Avionic Wiring Diagrams
Section 9 - Numerical Index
The numerical index located in the back of the book
in Section 9, lists all parts and the figures in which
they appear.
STANDARD PARTS.
Many parts having standard usage have been incorpo-
rated into the Cessna Standard System. Parts in this
group are designated with the part number prefix "S. "
For standard hardware items such as Tinnerman nuts,
clamps, etc., "AN", "MS" and "NAS" numbers have
been used.
USABLE ON CODES.... Serial listings in this manual
are noted by a letter code located in the usable on
code column which is the extreme right hand column
of the parts list page. Usable on codes are applicable
only to the figure on which they appear. The code
letters and the serials to which they apply are listed
at the end of the figure.
If no usable on code appears opposite a first column
listing of the figure, the usage is applicable to all
models and serials covered by this manual. If no
usable on code appears opposite any indented listing,
the usage is applicable to all models and serials cov-
ered by the figure on which it appears.
Bold face type serials appearing on certain figures
are for quick reference to large blocks of aircraft.
NON-INTERCHANGEABLE PARTS.... When parts
are not interchangeable with earlier models, all
parts applicable to the particular usage are listed.
The letter code for the individual part usage is
listed in the usable on column opposite each part.
Care should be exercised in determining proper
serial when ordering to ensure receipt of correct
part.
INTERCHANGEABLE PARTS.... When a later design
part is completely interchangeable with the part it re-
places, both parts will be serialized and the notation
"when exhausted use " will be entered following
the listing of the earlier design part. This means
that the earlier design part should be used on air-
planes to which they apply until the supply of these
parts is exhausted---after which time the later de-
sign part must be used. This is done to simplify
stocking of parts by our distributors and dealers.
The earlier part is as good, physically and function-
ally, as the later design part---the difference being
the later design part can be used on more than one
block of airplane serials.
SYMBOLS & PART NUMBER TERMS.
NP - The symbol "NP" appearing in the units per
assembly column denotes that the item it appears
opposite is not procurable.
AR - The symbol "AR" appearing in the units per
assembly column denotes "As Required" and is used
to indicate bulk quantity when an indefinite amount
is used.
REF - The symbol "REF" appearing in the units per
assembly column denotes that the item it appears
opposite is for reference only.
ALT - The symbol "ALT" following the nomenclature
of an item is used to denote an alternate part.
LH & RH - The symbols either LH or RH are used
following the part nomenclature to denote either left
hand or right hand parts.
The following is an additional list of abbreviations
that may appear in the description nomenclatures:
A/P - Autopilot
ACFT - Aircraft
ADF - Automatic Direction Finder
ALT - Alternate
AMP - Ampere or Amplifier
ANT - Antenna
ARC - Automatic Radial Centering
ASSY- Assembly
BC - Backcourse
BCN - Beacon
CKT BKR - Circuit Breaker
COM - Communications
DG - Directional Gyro
DIM - Dimming
DISC - Disconnect
DME - Distance Measuring Equipment
ELEC - Electric
ELT - Emergency Locating Beacon
FWD - Forward
HF - High Frequency
HI - High
HOZ - Horizon
HSI - Horizontal Situation Indicator
IFCS - Integrated Flight Control System
ILS - Instrument Landing System
IND - Indicator
INST - Instrument
LO- Low
LOC - Localizer
LTS - Lights
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