ryan TCAD 9900 Series User manual

INSTALLATION MANUAL
9900 Series
Models 9900, 9900A and 9900B
Copyright 1998
RYAN INTERNATIONAL CORPORATION Telephone: [phone]
4800 Evanswood Drive · Columbus, Ohio 43229 Manual Part Number: 32-2301
Revision 4, December 17, 1998

Special Note to Installers:
The following important issues regarding TCAD installation should be noted during the
planning stages. See the Installation Planning Guide, Section VI for additional
information:
1. The Model 9900B installation requires the Sensor Systems bearing antenna set, which
is supplied with the 9900B. The 9900A and 9900 require L-band antennas such as the
Comant CI-105, which are not supplied. See Paragraph 1.7.
2. The design antenna cable loss is 3dB, ±0.5dB. The loss requirement between cables is
0.2dB. Plan the antenna cable lengths insure compliance with this requirement. See
Paragraph 1.9.
3. The location of the antenna is important. The antenna "view" ahead of the aircraft
must not be obstructed. See Paragraphs 2.13 and 6.2.1.
4. The Models 9900 and 9900A are upgradable to the 9900B. If installing a 9900 or
9900A, it may be in the best interest of the installer and the customer to install an
additional coaxial line from each antenna (top and bottom). This will greatly reduce
the time and expense of upgrading to the 9900B in the future.
5. Suppression between the transponder, TCAD and DME (if installed) is required. See
Paragraph 2.4.
6. Connecting TCAD audio to an audio panel without internal amplification or into a
shared audio port can affect the maximum audio level. See Section VI.
7. Interface with Multifunction Displays is covered in a separate document, 32-2304,
Model 9900B Multifunction Display Interface Installation Instructions.
8. The Annunciator circuit is a switched ground. Applying battery voltage to this input
can damage the TCAD Processor.

Revision 4 -December 17,1998 Ryan TCAD 9900 Series i
TABLE OF CONTENTS
SECTION I
GENERAL INFORMATION
Paragraph Page
1.1 Introduction......................................................................................... 1-1
1.2 Product Description............................................................................. 1-1
1.3 Technical Characteristics...................................................................... 1-3
1.4 Factory Settings................................................................................... 1-4
1.5 Units and Accessories Supplied............................................................ 1-4
1.6 License Requirements .......................................................................... 1-5
1.7 Units & Accessories Required But Not Supplied.................................. 1-6
1.8 Installation Approval Basis................................................................... 1-6
1.9 Antenna Cable Requirements................................................................ 1-7
1.10 Instructions for Continued Airworthiness............................................. 1-9
SECTION II
INSTALLATION
Paragraph Page
2.1 General................................................................................................ 2-1
2.2 Unpacking and Inspection.................................................................... 2-1
2.3 Transponder and Encoder Requirements .............................................. 2-1
2.4 Suppression ......................................................................................... 2-3
2.5 Annunciator Output............................................................................. 2-4
2.6 Cooling................................................................................................ 2-4
2.7 Antenna Placement Considerations....................................................... 2-4
2.8 Transponder Coupler ........................................................................... 2-4
2.9 Initial Bench Check.............................................................................. 2-5
2.10 Mechanical Installation of Display........................................................ 2-5
2.11 Mechanical Installation of Processor .................................................... 2-7
2.12 Mechanical Installation of Transponder Coupler................................... 2-9
2.13 Mechanical Installation of Antennas ..................................................... 2-10

Revision 4 -December 17,1998 Ryan TCAD 9900 Series ii
Paragraph Page
2.14 Overview of Electrical Installation........................................................ 2-11
2.15 Electrical Wiring of Display and Processor........................................... 2-13
2.16 Electrical Wiring of Suppression .......................................................... 2-18
2.17 Electrical Wiring of Transponder Coupler ............................................ 2-19
2.18 Antenna Cable Installation.................................................................... 2-20
2.19 Electrical Wiring of Altitude Encoder................................................... 2-21
SECTION III
OPERATION
Paragraph Page
3.1 General................................................................................................ 3-1
3.2 Audio & Visual Alert........................................................................... 3-1
3.3 Description of Operator Controls......................................................... 3-2
3.4 Symbols............................................................................................... 3-3
3.5 Basic Displays...................................................................................... 3-4
3.6 The Air Traffic Shield .......................................................................... 3-6
3.7 Operating Modes ................................................................................. 3-6
3.8 Bearing................................................................................................ 3-7
3.9 Programming....................................................................................... 3-8
3.10 Setting the Shield Size (9900A and 9900B).......................................... 3-8
3.11 Setting Density Altitude....................................................................... 3-8
3.12 Setting Tone Options........................................................................... 3-9
3.13 Setting the Altitude Alert ..................................................................... 3-9
3.14 TCAD Fault Displays........................................................................... 3-9
3.15 Pilot Initiated Test................................................................................ 3-9
3.16 Disclaimer............................................................................................ 3-10

Revision 4 -December 17,1998 Ryan TCAD 9900 Series iii
SECTION IV
PERFORMANCE TESTING
Paragraph Page
4.1 General................................................................................................ 4-1
4.2 Equipment Required ............................................................................ 4-1
4.3 Computer Test..................................................................................... 4-1
4.4 Ramp Test ........................................................................................... 4-3
4.5 Interference Check............................................................................... 4-5
4.6 Suppression Check............................................................................... 4-7
4.7 Customer Care Checklist...................................................................... 4-7
4.8 Bench Test Set Up............................................................................... 4-8
4.9 Technician Test Routine....................................................................... 4-8
SECTION V
WARRANTY AND PRODUCT SUPPORT
Paragraph Page
5.1 Documentation .................................................................................... 5-1
5.2 Return Authorization ........................................................................... 5-1
5.3 Warranty Service ................................................................................. 5-1
SECTION VI
INSTALLATION PLANNING AND TROUBLESHOOTING GUIDE
Paragraph Page
6.1 General................................................................................................ 6-1
6.2 External Connections........................................................................... 6-1
6.3 Checkout............................................................................................. 6-5
6.4 Installation in a Severe EMI Environment ............................................ 6-5
6.5 Malfunction Indications........................................................................ 6-5

Revision 4 -December 17,1998 Ryan TCAD 9900 Series iv
LIST OF ILLUSTRATIONS
Figure Page
1-1Features of the 9900 Series .................................................................. 1-2
1-2Air Traffic Shield Limits....................................................................... 1-4
1-3Antenna Cable Requirements................................................................ 1-7
1-4Sample Description of Work Accomplished.......................................... 1-8
1-5Environmental Qualifications................................................................ 1-10
2-1TCAD Components ............................................................................. 2-2
2-2Availability of Suppression for Popular Transponders........................... 2-3
2-3Display Mounting................................................................................. 2-5
2-4Display Dimensions.............................................................................. 2-6
2-5Panel Cutout for Display...................................................................... 2-6
2-6Processor Mounting Tray..................................................................... 2-7
2-7Processor with Mounting Tray............................................................. 2-8
2-8Transponder Coupler ........................................................................... 2-9
2-9Recommended Antenna Locations ....................................................... 2-10
2-10 Block diagram of Electrical Wiring....................................................... 2-12
2-11 Processor Front Panel .......................................................................... 2-13
2-12 25-Pin Cable-End Receptacle for Mating with P1................................. 2-14
2-13 9-Pin Cable-End Receptacle for Mating with P910............................... 2-15
2-14 Wiring Diagram for a Single Display or Single Transponder................. 2-16
2-15 Wiring Diagram for Dual Displays or Dual Transponders ..................... 2-17
2-16 Suppression Configurations.................................................................. 2-18
2-17 Installing Cables to the Transponder Coupler ....................................... 2-20
2-18 Internal Diode Isolation of Altitude Encoder Lines............................... 2-22
2-19 15-Pin Cable-End Plug for mating with J1............................................ 2-22
2-20 Model 9900B Top Antenna Illustration................................................ 2-23
2-21 Model 9900B Bottom Antenna Illustration .......................................... 2-23
3-1Display Symbols................................................................................... 3-3
3-2Controls and Display, Search Configuration ......................................... 3-4
3-3Controls and Display, Threat Configuration.......................................... 3-5

Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 1-1
SECTION I
GENERAL INFORMATION
1.1 INTRODUCTION
This manual contains information regarding the physical, mechanical and electrical
characteristics, as well as installation information pertaining to the TCAD 9900 Series.
For maintenance and repair information, contact Ryan International Corporation.
Installation Planning tips are found in Section VI.
1.2 PRODUCT DESCRIPTION
The Ryan TCAD (Traffic and Conflict Alert Device) is an on-board traffic display product
used to identify and display information regarding nearby transponder equipped aircraft.
Using Mode C and Mode S transponder replies, TCAD determines relative altitude and
range of nearby aircraft. Aircraft with non-Mode C transponders can provide range
information. The Ryan TCAD will not detect aircraft without transponders. TCAD,
within defined limits, creates a shield of airspace around the aircraft, whereby detected
traffic generates an alert. The shield size is selectable for various phases of flight. The
TCAD 9900B also provides bearing information.
TCAD uses a cockpit display for traffic information. Audible and visual annuciations are
provided to alert the pilot. Range is displayed in indicated Nautical Miles (iNM),
determined from the arrival amplitude of the threat transponder signal. Relative altitude is
displayed in hundreds of feet, and is determined from comparison of the threat aircraft
altitude replies with the host altitude encoder. Installation consists of single or dual
Display units, a remote mounted Processor, top and bottom mounted L-band antennas and
a Transponder Coupler for each transponder.
The Ryan TCAD 9900 Series consist of three models, the 9900, 9900A and 9900B. The
features below are provided. The table shows the availability of the features for each
model. See the Pilot's Handbook for limitations.
•Air Traffic Shield -Provides a shield of airspace above, below, and around your
aircraft.
•Traffic Display -Detects threats and displays altitude separation, and iNM (indicated
nautical miles) between your aircraft and threats.
•Trend Data -Shows trend between your aircraft location and the primary threat.
•Tone Alerts and Voice Alerts -Provides Voice or tone alerts for detected traffic.
•MSL Altitude, Mode A, and N-number -Capable of displaying additional data,
including MSL altitude, ATC Transponder Code (when available) and the N-Number
of U.S.-registered Mode S equipped aircraft.
•Host Altitude Display -Provides a digital display of altitude to crosscheck and
confirm your primary altimeter display.

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•Altitude Alert -Features Altitude Alert functions for safer, more precise flying.
•Density Altitude -Computes and displays Density Altitude by simply setting OAT.
•Programmable, Selectable Shield -Features pilot selectable shield volumes for
Terminal, Standard, and Enroute modes.
•Dynamic Shield –The monitored airspace will expand for high-performance climbs
and descents, and will automatically transition to the ENRT mode.
•Bearing -Indicates the direction of the traffic for faster visual acquisition.
Multifunction Display -The Model 9900B is capable of providing traffic information to
certain multifunction displays. The Multifunction Display Interface for the ARGUS is
approved under STC 00900NY. For instructions regarding installation, see Model 9900B
Multifunction Display Interface Installation Instructions, Document 32-2304.
TCAD will display multiple aircraft inside the selected shield. The TCAD is advisory only,
and is a back up to the "SEE-AND-AVOID" concept and the ATC radar environment.
Model 9900B Model 9900A Model 9900
Air Traffic Shield Air Traffic Shield Air Traffic Shield
Traffic Display Traffic Display Traffic Display
Trend Data Trend Data Trend Data
Tone Alerts Tone Alerts Tone Alerts
MSL Altitude of traffic MSL Altitude of traffic MSL Altitude of traffic
Host Altitude Display Host Altitude Display Host Altitude Display
Altitude Alert Altitude Alert Altitude Alert
Density Altitude Density Altitude Density Altitude
Programmable, Selectable
Shield Programmable, Selectable Shield Selectable Shield
Dynamic Shield Dynamic Shield
Voice Alerts Voice Alerts
Mode A and N-number Mode A and N-number
Bearing
Multifunction Display
Figure 1-1Features of the 9900 Series

Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 1-3
1.3 TECHNICAL CHARACTERISTICS
Weight:
Display: 1.0 pounds (0.45 Kg), with mounting clamp
Processor (9900 & 9900A): 6.13 pounds (2.78 Kg), with mounting tray
Processor (9900B): 6.38 pounds (2.89 Kg), with mounting tray
Transponder Coupler: 0.5 pounds (0.23 Kg)
Antennas (9900B): Top antenna, 10.5 ounces (298 grams)
Bottom antenna, 12 ounces (340 grams)
Cooling: Radiation, Convection
Display Installation Dimensions: 3.26 in. (8.3 cm) wide;
1.55 in. (3.9 cm) high;
6.75 in. (17.2 cm) deep
8.5 in. (21.6 cm) deep with connector
Processor Installation Dimensions: 7.25 in. (18.4 cm) wide;
3.1 in. (7.9 cm) high;
9.325 in. (23.7 cm) deep;
11.675 in. (29.6 cm) deep with connectors
NOTE: The mounting tray allows for two mounting configurations. The height
and width dimensions are interchanged when using the upright-mounting configuration.
Transponder Coupler Dimensions: 1.8 inches (4.6 cm) wide;
1.603 inches (4.1 cm) high;
2.7 inches (6.9 cm) long
Operating Voltage: 11 −− 29 Volts DC
Current (9900 & 9900A): 2.4 A @ 14 VDC; 1.4 A @ 28 VDC
Current (9900B): 3.2 A @ 14 VDC; 1.95 A @ 28 VDC
Audio Output: Maximum 100 mW @ 600 ohms
Annunciator Output Current: Switched Ground; 100 mA maximum
Receiver Frequency: 1090 MHz ±3 MHz
Suppression Bus Compatibility: Both Mutual and Unidirectional Systems
Encoder Compatibility: TSO C88a encoder, 0.5mA maximum draw.
Display dimming: Automatic
Transponder Coupler Signal Loss: less than 0.2 dB
Transponder Coupler VSWR: 1.08:1 at 1090 MHz
Shield Limits are on the following page:

Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 1-4
Shield Limits: Terminal Mode Standard Mode Enroute Mode Unrestricted
Mode
Model 9900B 200 to 1000 FT,
0.5 to 1.5 iNM 500 to 1500 FT 1.0 to 3.0 iNM
1000 to
2000 FT
2.0 to 6.0 iNM
10,000 FT
and 6.0 iNM
Model 9900A 200 to 1000 FT,
0.5 to 1.5 iNM500 to 1500 FT 1.0 to 3.0 iNM
1000 to
2000 FT
2.0 to 6.0 iNM
10,000 FT
and 6.0 iNM
Model 9900 Fixed 500 FT and
1.0 iNM Fixed 1000 FT and 2.0 iNM Fixed 2000 FT and 3.0 iNM 5,000 FT and 3.0 iNM
Figure 1-2 Air Traffic Shield Limits
1.4 FACTORY SETTINGS
The Ryan TCAD 9900 Series is delivered with the following settings:
Audio Volume: Mid Range
Mute Duration: 30 seconds
ENRT Shield Size: ±2000 feet, 3.0 iNM
STD Shield Size ±1000 feet, 2.0 iNM
TRML Shield Size: ±500 feet, 1.0 iNM
Altimeter Setting: 29.92 inches
Density Altitude Temperature: +59°F (+15°C)
Altitude Alert: 5,000 feet
Voice Enabled (9900A and 9900B)
1.5 UNITS AND ACCESSORIES SUPPLIED
Ryan TCAD 9900 Series Model 9900 (P/N 71-2000), Model 9900A (P/N 71-2200) and
Model 9900B (P/N 71-2400) consisting of:
A. Ryan TCAD 9900 Series Display Assembly, including:
a. Display Unit:
Model 9900 P/N 70-2100
Model 9900A P/N 70-2300
Model 9900B P/N 70-2500
b. Display Clamp Assembly P/N 28-3110
c. Display Connector kit P/N 61-2003, including
(a) 9 pin ‘D’ Connector -Socket
(b) 9-pin ‘D’ Shell
(c) ‘D’ Connector Jack Screw Kit
(d) ‘D’ Connector Socket Pins
An optional second Display is available.

Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 1-5
B. Ryan TCAD 9900 Series Processor Assembly, including:
a. Processor Unit:
P/N 70-2000 (9900), P/N 70-2200 (9900A), P/N 70-2400 (9900B)
b. Mounting Tray P/N 60-2006 with Doubler Plate (P/N 28-2208)
c. Processor Connectors P/N 62-2001
(a) 9-pin ‘D’ Connector jack screws and shell -(jumper installed)
(b) 15-pin ‘D’ Plug Connector, jack screws, pins and shell
(c) 25-pin ‘D’ Socket Connector, jack screws, pins and shell
d. EMI and DME Suppression Kit P/N 62-2003
(a)Two diodes, one resistor and one inductor
C. Transponder Coupler, P/N 70-2040
a. Two Type ‘N’ Plug Connectors, P/N 62-2040
b. Four Mounting Screws, 6-32 x 1-3/8”, Stainless Steel
NOTE: If dual transponders are installed on the aircraft, a second Transponder
Coupler with accessories is required.
D. Literature Pack, P/N 63-2004
a. Installation Manual, 9900 Series
b. Pilot's Operating Handbook (POH), 9900 Series, including the
Multifunction Display (MFD) Interface Supplement to the Pilot's
Operating Handbook
c. Instructions for Continued Airworthiness
d. Information Concerning Instructions for Continued Airworthiness
e. Sample Flight Manual Supplement for TCAD
f. Copy of STC 1763GL
E. Model 9900B:
a. Bearing Antenna Kit P/N 70-2410 consisting of:
(a) Two L-Band antennas, Top (T) and Bottom (B), conforming
to TSO C74c and U.S. Patent 5,552,788. Sensor Systems
P/N S72-1750-31L and S72-1750-32L
(b) Two Doubler Plates, Sensor Systems P/N S72-17500-1
b. Model 9900B Multifunction Display Literature Pack, P/N 63-2003,
including:
(a) Multifunction Display Interface Installation Instructions
(b) Multifunction Display Interface Supplement to the Pilot's
Operating Handbook (included in POH, see D. above)
(c) Sample Flight Manual Supplement for MFD Interface
(d) Copy of STC 00900NY
1.6 LICENSE REQUIREMENTS
The Ryan TCAD is a passive receiver, and does not require an Aircraft Station License.

Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 1-6
1.7 UNITS & ACCESSORIES REQUIRED BUT NOT SUPPLIED
A.Altitude Encoding Device, conforming to TSO C88a.
B. Model 9900 and 9900A: Two L-band antennas, maximum VSWR 1.4 at
1090Mhz conforming to TSO C66a, C66b, or C74c. The Comant CI 105 is
recommended for most applications, or Comant CI 100 for higher speed
aircraft. Comant Industries, Santa Fe Springs, CA, telephone: 562-946-
6694.
C. Wiring:
Antennas: See Figure 1-3 for cable requirements.
Display: Multi-Conductor Shielded cable for EIA-232 applications.
Optionally, twinaxial cable such as Belden 9222, may be used.
Processor: #22 AWG (power and ground); #24 AWG (other connections).
Suppression and Coupler: Use 50-ohm coaxial cable.
D. Circuit breaker, trip-free resettable, 3 Amperes.
E. A BNC T-adapter is required when two Transponder Couplers are used.
F. Standard BNC plug connectors for Coupler cable ends, two per transponder.
G. Standard TNC plug connectors for antenna cable ends at the TCAD
Processor, and connectors appropriate for the antennas used.
1.8 INSTALLATION APPROVAL BASIS
The person who performs or supervises the installation of the Ryan TCAD may be
required to prepare FAA form 337. See Figure 1-2 for a Sample Description of Work
Accomplished. The Ryan TCAD is an isolated self-contained system operating as a
supplement to “see and avoid” procedures. An original STC has been awarded, making
the system eligible for follow-on field approval consideration. Data that can be used as a
basis for approval for return to service are:
A. STC Documents (Supplied in the Literature Pack).
B. AC 43.13-1 and -2; Acceptable Methods, Techniques, and Practices.
C. DO-160C; Environmental Conditions and Test Procedures for Airborne
Equipment (see Figure 1-4).
D. Manufacturer's installation instructions.
E. The antenna locations must be structurally substantiated.
Equipment installation procedures do not differ significantly among various aircraft. The
installation and operation of the Ryan TCAD does not materially affect aircraft operation
or performance.

Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 1-7
The Sample Description of Work Accomplished (Figure 1-4) is suggested language
provided as a convenience to the installing agency. The information and wording should
be modified to correctly describe the particular installation. Ryan International
Corporation assumes no responsibility for alterations to the airframe.
1.9 ANTENNA CABLE REQUIREMENTS
TCAD measures the signal strength of received transponder replies to estimate distance.
Proper range performance is dependent on correct antenna cable attenuation, which is
directly related to proper cable types, lengths and the quality of the cable terminations.
TCAD is designed for 3±½ dB loss in the antenna cables. In addition, the cable loss of
each cable must match within 0.2 dB (about 12 inches). This is normally accomplished by
keeping the lengths and configurations the same for each cable.
NOTE: Matched antenna cable lengths are important. The top and bottom antenna
cable attenuation should be matched to within 0.2dB.
Figure 1-3 identifies recommended cable types. Cables from other manufacturers can be
used. If so, the loss at 1GHz must be supplied and used to calculate the cable length.
Cable Length
to meet 3dB
requirement
Cable Attenuation
(dB/100 feet
@1 GHz)
Recommended Cable
Note: Equivalent cable with proper attenuation
may be used. Contact the cable manufacturer.
15±2 feet 19.6 ECS* 3C058A
24±3 feet 13.0 ECS 3C142B, EMTEQ* PFLX175-100 or
PIC* S44191
26±4 feet 11.5 ECS 311901, EMTEQ PFLX 195-100 or
PIC S44193
35±5 feet 8.6 ECS 311601
45±8 feet 6.6 EMTEQ PFLX340-100
*High-performance cables usually require special connectors. Contact the cable
manufacturer for more information. To Contact ECS, call 1-800-ECS-WIRE;
EMTEQ, 888-679-6170; and PIC Wire & Cable 1-800-742-3191.
Figure 1-3Antenna Cable Requirements

Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 1-8
8. Description of Work Accomplished
(If more space is required, attach additional sheets. Identify with aircraft nationality and
registration mark and date work completed.)
A. The following equipment and components were installed:
1. TCAD MODEL (insert Model Number) Display Unit, P/N
(insert part number).
2. TCAD MODEL (insert Model Number)Processor, P/N (insert
part number), with Mounting tray.
3. Transponder Coupler, P/N 70-2040.
4. Two L-band antennas.
B. The Display Unit was installed in (position in the instrument
panel) according to instructions in the Ryan TCAD
9900 Series Installation Manual, P/N 32-2301, dated (insert
date of manual), and guidance in FAA Advisory Circulars
43.13-1A,Chapter 11, and 43.13-2A, Chapters 1 and 2.
C. The Processor was installed in the Mounting Tray Assembly,
located at (location in the aircraft) according to
instructions in the Ryan TCAD 9900 Series Installation
Manual, P/N 32-2301, dated (insert date of manual), and
guidance in FAA Advisory Circulars 43.13-1A, Chapter 11, and
43.13-2A, Chapters 1 and 2. (if mounted at a location other
than the avionics bay, substantiate the structural integrity)
D. The Transponder Coupler was installed in (position of mounting
in the aircraft) according to instructions in the Ryan TCAD
9900 Series Installation Manual, P/N 32-2301, dated (insert
date of manual), and guidance in FAA Advisory Circulars
43.13-1A, Chapter 11, and 43.13-2A, Chapters 1 and 2.
E. An L-band Antenna was installed on the top of the aircraft
fuselage in accordance with instructions and guidance
contained in FAA Advisory Circular 43.13-2A, Chapter 3.
F. An L-band Antenna was installed on the bottom of the aircraft
fuselage in accordance with instructions and guidance
contained in FAA Advisory Circular 43.13-2A, Chapter 3.
NOTE: Include structural substantiation of antennas.
G. An electrical load analysis was performed and found that the
continuous load of the alternator (generator or other supply)
does not exceed 80% of capacity.
(continued)

Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 1-9
H. A complete operational test was performed according to
Ryan TCAD 9900 Series Installation Manual, P/N 32-2301
dated (insert date of manual). The equipment performed
satisfactorily and did not adversely affect existing
components or systems in the aircraft as required by FAR
23.1301 (or FAR 25.1301, FAR 27.1301, or FAR 29.1301 as
applicable).
I. The aircraft equipment list was revised to reflect these
changes; weight and balance data was revised and placed in the
aircraft records. A Ryan TCAD Pilot's Handbook, P/N 32-2302
dated (insert date of Handbook), was placed in the aircraft.
(NOTE: Use of the Annunciator Output and/or interconnection
with a Multifunction Display should also be documented).
Figure 1-4Sample Description of Work Accomplished
1.10 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
The Instructions for Continued Airworthiness (ICA) document and other information
pertaining to Instructions for Airworthiness are contained in the Literature Pack supplied
with the TCAD. A copy of the ICA document should be provided to the
Owner/Operator. If a copy of the ICA document is not available, contact Ryan
International Corporation for a copy.

Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 1-10
ENVIRONMENTAL QUALIFICATIONS
NOMENCLATURE: Ryan TCAD Air Traffic Shield
MODEL NUMBER: 9900 Series
MANUFACTURER'S SPECIFICATION: Ryan TCAD Performance Requirements
MANUFACTURER: Ryan International Corporation
4800 Evanswood Drive
Columbus, Ohio 43229
CONDITIONS DO-160C
SECTION DESCRIPTION OF TESTS CONDUCTED
TEMPERATURE
AND ALTITUDE 4.0 EQUIPMENT TESTED TO CATEGORIES F1 (DISPLAY) AND F2 (PROCESSOR)
TEMPERATURE
VARIATION 5.0 EQUIPMENT TESTED TO CATEGORY B
HUMIDITY 6.0 EQUIPMENT TESTED TO CATEGORY A
OPERATIONAL SHOCK
AND CRASH SAFETY 7.0EQUIPMENT TESTED PER DO-160C PARAGRAPHS 7.2 AND 7.3
VIBRATION 8.0 EQUIPMENT TESTED TO
CATEGORIES M, N, AND B (Table 8-1)
EXPLOSION 9.0 EQUIPMENT IDENTIFIED AS CATEGORY
‘X’, NOT TEST REQUIRED
WATERPROOFNESS 10.0 EQUIPMENT IDENTIFIED AS CATEGORY
‘X’, NOT TEST REQUIRED
FLUIDS
SUSCEPTIBILITY 11.0 EQUIPMENT IDENTIFIED AS CATEGORY ‘X’, NOT TEST REQUIRED
SAND AND DUST 12.0 EQUIPMENT IDENTIFIED AS CATEGORY
‘X’, NOT TEST REQUIRED
FUNGUS 13.0 EQUIPMENT IDENTIFIED AS CATEGORY
‘X’, NOT TEST REQUIRED
SALT SPRAY 14.0 EQUIPMENT IDENTIFIED AS CATEGORY
‘X’, NOT TEST REQUIRED
(Continued)

Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 1-11
MAGNETIC EFFECT 15.0 EQUIPMENT TESTED AS CLASS A
POWER INPUT 16.0 EQUIPMENT TESTED TO CATEGORY B
VOLTAGE SPIKE
CONDUCTED 17.0 EQUIPMENT TESTED TO CATEGORY A
AUDIO FREQUENCY
CONDUCTED
SUSCEPTIBILITY
18.0 EQUIPMENT TESTED TO CATEGORY B
INDUCED SIGNAL
SUSCEPTIBILITY 19.0 EQUIPMENT TESTED TO CATEGORY A
RADIO FREQUENCY
SUSCEPTIBILITY 20.0 EQUIPMENT TESTED TO CATEGORY T
RADIO FREQUENCY
EMISSION 21.0 EQUIPMENT TESTED TO CATEGORY A
LIGHTNING INDUCED
TRANSIENT SUSCPT 22.0 EQUIPMENT IDENTIFIED AS CATEGORY ‘X’, NOT TEST REQUIRED
LIGHTNING DIRECT
EFFECTS 23.0 EQUIPMENT IDENTIFIED AS CATEGORY ‘X’, NO TEST REQUIRED
ICING 24.0 EQUIPMENT IDENTIFIED AS CATEGORY
‘X’, NO TEST REQUIRED
Figure 1-5Environmental Qualifications

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Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 2-1
SECTION II
INSTALLATION
2.1 GENERAL
The Ryan TCAD should be installed according to this manual and AC 43.13-1A and -2A.
Cable harnesses and mechanical supports must be fabricated by the installing agency to
these requirements. This Section contains interconnect diagrams, mounting dimensions,
antenna placement and other information pertaining to installation. See Section VI for
installation tips. For instructions regarding multifunction displays, see Model 9900B
Multifunction Display Interface Installation Instructions, Document 32-2304.
The TCAD consists of three major components, plus antennas:
•Display with Mounting Clamp
•Processor with Mounting Tray
•Transponder Coupler
In addition, two L-band transponder antennas are required, one top mounted on the
aircraft fuselage, and one bottom mounted on the aircraft fuselage. The Model 9900B
antennas are supplied, the antennas for the Model 9900 and 9900A are not supplied. A
second display is optional. Figure 2-1 illustrates the three major components.
Refer to Section IV for checkout and Customer Care checklist.
2.2 UNPACKING AND INSPECTION
Exercise care when unpacking the equipment. Make a visual inspection of the unit for
evidence of damage incurred during shipment. If a claim for damage is to be made, save
the shipping container to substantiate the claim. The claim should be filed with the
transportation company. Retain the container and packaging material after the equipment
has been removed should equipment storage or reshipment become necessary.
2.3 TRANSPONDER AND ENCODER REQUIREMENTS
The on-board transponder(s) must accept suppression input (often called DME or mutual
suppression). A transponder is not required for proper operation of the TCAD.
An altitude encoder is required. Encoders that conform to TSO C88a can be used.
Normally, TCAD can be paralleled on the output of an encoder without degrading the
encoder performance. The installing agency must make this determination. TCAD
altitude input lines are diode isolated (see figure 2-18).
Ordinarily, TCAD should be connected to the encoder that is connected to the
transponder.

Revision 4 -December 17,1998 Ryan TCAD 9900 Series Page 2-2
Figure 2-1TCAD Components (Antennas not shown)