• TWR-850-690x364

TWR-850/WXR-840 Weather Radar Systems

Unprecedented radar performance is now available with the Collins TWR-850/ WXR-840/WXR-800 Weather Radar Systems. State-of-the-art electronic and computer technologies provide operational convenience and features previously available only to large air transport aircraft. Now, the small size and light weight of the TWR-850/WXR-840/WXR-800 makes these radars the choice for the rest of the turbine-powered fleet. In addition, the solid-state transmitter improves reliability and eliminates one of the most troublesome components of conventional weather radar - the magnetron vacuum tube.

In addition to the expected function of detecting precipitation, the TWR-850 also detects accompanying turbulence by using Doppler frequency shift. This technological advancement is made possible by the availability of transmitters with extremely high frequency stability and powerful digital signal processing capabilities.

Sales

Phone 1: 319-295-4085
Email

Technical Support

Phone 1: 319-295-5000
Email

Features & Benefits

  • Advanced Doppler-based turbulence and weather detection for faster, better quality weather analysis
  • Solid-state transmitter provides higher reliability (no magnetron burnout) and allows optimum pulse width for all ranges and modes
  • Supersensitive coherent receiver architecture with bandwidth optimized for each transmitter pulse width
  • Virtually eliminates personnel radiation hazard of conventional radars
  • Ground clutter suppression mode enhances weather returns by minimizing ground returns using Doppler processing
  • Dual control capability that gives independently selectable range, mode and tilt for pilot and copilot
  • Auto tilt reduces pilot workload by automatically readjusting antenna tilt after a range or altitude change
  • Automatic picture rotation capable during aircraft turns keeps a clear weather picture at all times; no waiting for a scan update
  • Path Attenuation and Correction (PAC) accurately displays weather behind intervening storms warns of attenuated areas (radar shadow)
  • Sector scan provides rapid picture updates by reducing scan angle to ± 30°

Specifications

Performance

RTA-800

 

RTA-800 

Performance Index

 

222

 

Avoidance Range

 

340 nm

 

Ranges

 

5, 10, 25, 50, 100, 200, 300 nm standard

 

Transmitter Power

 

35 W Nominal

 

Frequency

 

X band

 

Pulse Length

 

1.8, 2.4, 4.8, 9.6, 19.2, or 28.8 micro sec

 

Scan Rate

 

27°/second

 

Modes

 

Weather, Map, Test, Standby

 

Antenna

 

 

Type

 

Flat Plate

 

Size

 

30.5 cm (12.0 in)

 

Beam Width

 

 

Scan Angle

 

120°, sector scan

 

Tilt

 

±15°

 

Stabilization

 

±30° combined pitch, roll and tilt

 

RTA-852/RTA-842

 

RTA-852/ RTA-842 

Performance Index

 

222

 

Avoidance Range

 

340 nm

 

Ranges

 

5, 10, 25, 50, 100, 200, 300 nm standard

 

Transmitter Power

 

35 W Nominal

 

Frequency

 

X band

 

Pulse Length

 

1.8, 2.4, 4.8, 9.6, 19.2, or 28.8 micro sec

 

Scan Rate

 

27°/second

 

Modes

 

Weather, Weather and Turbulence*, Turbulence*, Target, Map, Test, Standby, Off

 

Antenna

 

 

Type

 

Flat Plate

 

Size

 

30.5 cm (12.0 in)

 

Beam Width

 

 

Scan Angle

 

120°, or 60° sector scan

 

Tilt

 

±15°

 

Stabilization

 

±30° combined pitch, roll and tilt

 

* RTA-85X only

 

RTA-854/RTA-844

 

RTA-854/ RTA-844 

Performance Index

 

224

 

Avoidance Range

 

365 nm

 

Ranges

 

5, 10, 25, 50, 100, 200, 300 nm standard

 

Transmitter Power

 

35 W Nominal

 

Frequency

 

X band

 

Pulse Length

 

1.8, 2.4, 4.8, 9.6, 19.2, or 28.8 micro sec

 

Scan Rate

 

27°/second

 

Modes

 

Weather, Weather and Turbulence*, Turbulence*, Target, Map, Test, Standby, Off

 

Antenna

 

 

Type

 

Flat Plate

 

Size

 

35.6 cm (14.0 in)

 

Beam Width

 

 

Scan Angle

 

120°, or 60° sector scan

 

Tilt

 

±15°

 

Stabilization

 

±30° combined pitch, roll and tilt

 

* RTA-85X only

 

RTA-858/RTA-848

 

RTA-858/ RTA-848 

Performance Index

 

228

 

Avoidance Range

 

420 nm

 

Ranges

 

5, 10, 25, 50, 100, 200, 300 nm standard

 

Transmitter Power

 

35 W Nominal

 

Frequency

 

X band

 

Pulse Length

 

1.8, 2.4, 4.8, 9.6, 19.2, or 28.8 micro sec

 

Scan Rate

 

27°/second

 

Modes

 

Weather, Weather and Turbulence*, Turbulence*, Target, Map, Test, Standby, Off

 

Antenna

 

 

Type

 

Flat Plate

 

Size

 

45.7 cm (18.0 in)

 

Beam Width

 

 

Scan Angle

 

120°, or 60° sector scan

 

Tilt

 

±15°

 

Stabilization

 

±30° combined pitch, roll and tilt

 

* RTA-85X only

 

Physical Specs

RTA-852/RTA-842/RTA-800

 

RTA-852/RTA-842/ RTA-800 

Height

 

*

 

Width

 

*

 

Length

 

22.01 cm (8.7 in)

 

Diameter

 

38.1 cm (15.0 in)

 

Weight

 

8.8 kg(19.5 lb)

 

* See product fact sheet or installation manual

 

RTA-854/RTA-844

 

RTA-854/ RTA-844 

Height

 

*

 

Width

 

*

 

Length

 

22.01 cm (8.7 in)

 

Diameter

 

38.1 cm (15.0 in)

 

Weight

 

9.1 kg (20.1 lb)

 

* See product fact sheet or installation manual

 

RTA-858

 

RTA-858 

Height

 

*

 

Width

 

*

 

Length

 

29.5 cm (11.6 in)

 

Diameter

 

45.7 cm (18.0 in)

 

Weight

 

10.4 kg (23.1 lb)

 

* See product fact sheet or installation manual 

WXP-850A/WXP-840A/WXP-800A

 

WXP-850A/ WXP-840A/ WXP-800A 

Height

 

35.2 mm (1.39 in)

 

Width

 

156.5 mm (6.16 in)

 

Length

 

176.1 mm (6.93 in)

 

Weight

 

0.86 kg (1.9 lb)

 

WXP-850B/WXP-840B/WXP-800B

 

WXP-850B/ WXP-840B/ WXP-800B 

Height

 

44.5 mm (1.75 in)

 

Width

 

127.0 mm (5.0 in)

 

Length

 

165.1 mm (6.5 in)

 

Weight

 

0.86 kg (1.9 lb)

 

Power

RTA-852/RTA-842/RTA-800

 

RTA-852/RTA-842/ RTA-800 

 
Power 

28 V DC at 3.1A

Plus, for analog stabilization only

 

115 V AC, 400Hz at 10mA max
or
26 V AC, 400Hz at 2.3 mA 

RTA-854/RTA-844

 

RTA-854/RTA-844

Power

 

28 V DC at 3.1A

 

 

Plus, for analog stabilization only

 

115 V AC, 400 Hz at 10 mA max

or

 

26 V AC, 400 Hz at 2.3 mA

RTA-858

 

RTA-858 

Power  

28 V DC at 3.1A

Plus, for analog stabilization only

 

115 V AC, 400 Hz at 10 mA max

or

26 V AC, 400Hz at 2.3mA 

RTA-858

 

WXP-850A/ WXP-840A/ WXP-800A 

Power

 

28 V DC at 0.5 A

 

Plus, for analog stabilization only

 

 

Lighting

 

5 V AC or 5 V DC at 1.5 A

or

28 V DC at 0.35A

 

WXP-850B/WXP-840B/WXP-800B

 

WXP-850B/ WXP-840B/ WXP-800B 

Power

 

28 V DC at 0.5 A

 

Plus, for analog stabilization only

 

 

Lighting

 

5 V AC or 5 V DC at 1.5 A

or

28 V DC at 0.35 A 

 

Environmental

RTA-852/RTA-842/RTA-800

 

RTA-852/RTA-842/ RTA-800 

Temperature

 

-55 to +70°C

 

Altitude

 

55,000 ft

 

 

RTA-854/RTA-844

 

RTA-854/ RTA-844 

Temperature

 

-55 to +70°C

 

Altitude

 

55,000 ft

 

RTA-858

 

RTA-858 

Temperature

 

-55 to +70° C

 

Altitude

 

55,000 ft

 

WXP-850A/WXP-840A/WXP-800A

 

WXP-850A/ WXP-840A/ WXP-800A 

Temperature

 

-20 to 55°C

 

Altitude

 

50,000 ft

 

WXP-850B/WXP-840B/WXP-800B

 

WXP-850B/ WXP-840B/ WXP-800B 

Temperature

 

-20 to 55°C

 

Altitude

 

50,000 ft

Certificates

RTA-852/RTA-842/RTA-800

 

RTA-852/RTA-842/ RTA-800 

FAA TSO

 

C63c

 

Environmental

 

DO-160B

 

 

F2/BBJ/E1/XXXXX/Z/BZ/ AZAZA

 

EUROCAE

 

ED-14B

 

 

RTA-854/RTA-844

 

RTA-854/ RTA-844 

FAA TSO

 

C63c

 

Environmental

 

DO-160B

 

 

F2/BBJ/E1/XXXXX/Z/BZ/ AZAZA

 

EUROCAE

 

ED-14B

RTA-858

 

RTA-858 

FAA TSO

 

C63c

 

Environmental

 

DO-160B

 

 

F2/BBJ/E1/XXXXX/ Z/BZ/ AZAZA

 

EUROCAE

 

ED-14B

 

WXP-850A/WXP-840A/WXP-800A

 

WXP-850A/ WXP-840A/ WXP-800A 

FAA TSO

 

C63c

 

Environmental

 

DO-160A

 

 

D1/A/PKS/ XXXXXX AAAAA

 

EUROCAE

 

ED-14A

 

WXP-850B/WXP-840B/WXP-800B

 

WXP-850B/ WXP-840B/ WXP-800B 

FAA TSO

 

C63c

 

Environmental

 

DO-160A

 

 

D1/A/PKS/ XXXXXX AAAAA

 

EUROCAE

 

ED-14A

 

Selection Guide

Radar Receiver/Transmitter/Antenna

Radar Receiver/Transmitter/Antenna 

Type 

Radiator size 

Part Number 

RTA-800

 

12 in

 

822-1050-004

 

RTA-852

 

12 in

 

622-8439-004

 

RTA-854 

 

14 in

 

622-8440-004

 

RTA-858

 

18 in

 

622-8441-004

 

RTA-842

 

12 in

 

622-9301-004

 

RTA-844

 

14 in

 

622-9302-004

 

RTA-848

 

18 in

 

622-9303-004

 

 

Weather Radar Panels

Weather Radar Panels 

 

Mounting 

Slave  

Color 

 

Type  

Panel 

Dzus 

Capability 

Gray 

Black 

Part Number 

WXP-850A

 

X

 

 

X

 

 

X

 

622-8393-011

 

 

X

 

 

X

 

X

 

 

622-8393-012

 

 

X

 

 

 

 

X

 

622-8393-013

 

 

X

 

 

 

X

 

 

622-8393-014

 

WXP-850B

 

 

X

 

X

 

 

X

 

622-8394-011

 

 

 

X

 

X

 

X

 

 

622-8394-012

 

 

 

X

 

 

 

X

 

622-8394-013

 

 

 

X

 

 

X

 

 

622-8394-014

 

WXP-840A

 

X

 

 

X

 

 

X

 

622-9304-011

 

 

X

 

 

X

 

X

 

 

622-9304-012

 

 

X

 

 

 

 

X

 

622-9304-013

 

 

X

 

 

 

X

 

 

622-9404-014

 

WXP-840B

 

 

X

 

X

 

 

X

 

622-9305-011

 

 

 

X

 

X

 

X

 

 

622-9305-012

 

 

 

X

 

 

 

X

 

622-9305-013

 

 

 

X

 

 

X

 

 

622-9305-014

 

WXP-800A

 

 

 

 

X

 

822-1048-001

 

 

 

 

X

 

 

822-1048-002

 

WXP-800B 

 

X

 

 

 

X

 

622-1049-001

 

 

 

X

 

 

X

 

 

622-1049-002

 

Note(s):

Slave capability allows one pilot HSI to display the radar display resulting from the other pilot WXP control settings

Slave capability is not required but is recommended in all dual installations

It is not recommended in a single installation 

Other

Unit 1

Mount/Mating Connector Data 

 

WXP-850A/ WXP-840A/ WXP-800A 

WXP-850B/ WXP-840B/ WXP-800B 

Mating Connector Depth

 

50.8 mm (2.0 in)

 

50.8 mm (2.0 in)

 

Mounting

 

Front panel

 

Dzus

 

 

Compatibility 

The TWR-850/WXR-840 is currently compatible with the EFIS equipment listed below. However, it is recommended that Collins be contacted to confirm current compatibility.

 

System

 

Type

 

Dash Number

 

EFIS-84

 

DPU/MPU-84

 

-002

 

EFIS-85/86A (1)

 

DPU/MPU-85A/86A

 

-002

 

EFIS-85/86B (2,12)

 

DPU/MPU-85G/86G

 

-002

 

EFIS-85/86B (4,14)

 

DPU/MPU-85N/86N

 

-001/002/003/004/005/012

 

EFIS-85/86C (4,14)

 

DPU/MPU-85R/86R

 

-001/002/003

 

EFIS-85/86E (4,14)

 

DPU/MPU-86S

 

-001/002/003/004

 

EFIS-86D (2)

 

DPU/MPU-86K

 

-003/004

 

Typical System

Main Components

TWR-850

TWR-850 

Type 

Qty 

Description 

Part Number 

RTA-854

 

1

 

Receiver/ Transmitter/Antenna, Turbulence Weather Radar

 

622-8440-004

 

WXP-850A

 

1

 

Panel, Weather Radar

 

622-8393-014

 

Note: See the FDS-2000 Flight Display System section for specifications, selection guide and installation hardware. 

Note: See the FDS-2000 Flight Display System section for specifications, selection guide and installation hardware. 

WXR-840

WXR-840 

Type 

Qty 

Description 

Part Number 

RTA-844

 

1

 

Receiver/ Transmitter/Antenna, Weather Radar

 

622-9302-004

 

WXP-840A

 

1

 

Panel, Weather Radar

 

622-9304-014

 

Note: See the FDS-2000 Flight Display System section for specification, selection guide and installation hardware.

Installation Hardware

RTA-852/854/858 RTA-842/844/848 RTA-800

RTA-852/854/858; RTA-842/844/848; RTA-800 

Description 

Qty 

Part Number 

Connector kit, crimp contacts

 

1

 

687-9726-003

 

Shim kit

 

A/R

 

687-9728-002

 

Alignment bar

 

A/R

 

687-9729-001

 

Special cable (Raychem 10599)

 

A/R

 

425-0215-020

 

WXP-850A/B WXP-840A/B WXP-800A/B

WXP-850A/B; WXP-840A/B; WXP-800A/B 

 

Option(1) 

 

Description 

A(2) Qty 

B Qty 

C Qty 

Part Number 

Connector kit, crimp contacts

 

1

 

 

 

687-9727-003

 

Shell, connector, 25 pin, crimp style

 

 

1

 

 

371-0213-030

 

Shell, connector, 37 pin, crimp style

 

 

1

 

 

371-0213-040

 

Crimp contacts, fits awg 20-, 22-, 24-wire

 

 

62

 

 

371-0213-110

 

Connector, 25 pin, solder type

 

 

 

1

 

371-0221-000

 

Connector, 37 pin, solder type

 

 

 

1

 

371-0222-000

 

Hood assembly, 25 pin

 

 

1

 

1

 

371-0185-000

 

Hood assembly, 37 pin

 

 

1

 

1

 

371-0186-000

 

Screw lock assembly

 

 

2

 

2

 

371-0040-010

 

Keying kit

 

 

1

 

1

 

629-8381-001

 

Note(s):

1. Order all items in any one option for each WXP

2. Option A consists of all option B items in a single kit

Related Documents

General Information

Publications

A complete range of technical information is available to support your operation and maintenance needs. The technical publications index allows you to identify the most current version of a publication, service bulletin or related document by part number, equipment type, system and similar functions. To search the index, use the global search box in the upper right corner of the page. If necessary, click the Pubs and Training tab to see results from the technical publications index.

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Training

Our instructional design specialists and staff of experienced instructors have developed and support your operator and maintenance training requirements. We offer a host of solutions to maximize your investment. On-site and customized training are available.

Our Learning Management System allows you to review course schedules for Instructor Led Training (ILT) and computer based training (CBT) offerings. Register as a student and enroll or take courses online. A username and password is required.

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Services & Support

Field Support Services

Our customer service engineers (CSEs) and global network of service centers and dealers provide you with the support you need for your personal aircraft, corporate aircraft or commercial air carrier.

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Tailored Services

Rockwell Collins facilities and capabilities allow us to offer a variety of support solutions from time and material repairs to price per flight hour asset management solutions. What ever your operational objectives, we have a solution to support your life cycle service requirements.

Contact a representative

 

Rockwell Collins Corporate Aircraft Service Program (CASP) offers corporate aircraft operators maximized aircraft availability at a predictable cost.

Email a representative

Phone: 1.888.265.5467 or 1.800.713.7693

Maintenance & Repair

Rockwell Collins Service Centers are strategically located throughout the world to provide maintenance on our equipment, both in and out of warranty. Overhaul and repair service can also be obtained at each location. As new products are introduced, service center capabilities are continually updated to support them. Located within each Service Center is a dedicated Customer Service Representative, available to answer questions or address problems.

To access a list of our global service locations access our Repair Equipment Directory 

If you would like information how to order repair parts or receive a quote, follow the link to the online shop.  

Spares & Parts

Our world-wide Rental/Exchange Service is ready to provide for your operational needs—24 hours a day, 7 days a week. We offer an extensive asset inventory and support system to deploy parts where and when you need them.

Phone: 1-800-713-7693 (within the U.S. only) or 1-319-295-4361
Fax: 1-319-295-6646
Email: rentalexchange@rockwellcollins.com

Access our Rental and Exchange Catalog. Registration is required.

To order Repair Parts or receive a quote, follow the link to the online shop.

Contacts

Sales

Phone 1: 319-295-4085
Email

Technical Support

Phone 1: 319-295-5000
Email

Related products and services

RTA-4100

WXR-2100

See more related products