Picture of product RA-4000
Part #: 84560-11-300A
Model: RA-4000
Desc: Radar Altimeter Transceiver
OEM: FreeFlight
Sched-B: 8526910070
ECCN: 7A994
Part Number :


RA-4000
 
FEATURES
  • Provides dependable, accurate above-ground-level (AGL) information
  • Valuable for flying search and rescue missions, forestry operations, pipeline maintenance, off shore helicopter ops, helicopter emergency medical services (HEMS), other aero-medical emergency services, border patrol, and electronic news gathering operations
  • Suited for a broad range of fixed & rotary wing aircraft
  • Designed for applications such as helicopter and seaplane operations where accuracy is needed down to zero feet
  • Provides precise AGL information from 2500 feet down to ground level
  • Lightweight, easy to install with flexible aircraft placement
  • Compatible with FreeFlight Systems RAD-40 Radar Altimeter Display
  • Optional NVG compatible display
  • Meets Precision Equipment output specification of TSO-C87 & ETSO-2C87
  • Increased pilot safety
  • Software zero calibration

NOTE: the key difference between RA-4500 & RA-4000 Radar Altimeters: the RA-4500 has ARINC 429/optional ARINC 552 output (EFIS Interface)

 
RA-4500 SPECIFICATIONS
Altitude Range: -20 to 2500 ft Power Requirements: 20 - 36 VDC; 400 mA MAX @ 28 VDC
Environmental: -67°F to +158°F; Alt: 50,000 ft Dimensions: 3.06"H x 3.15"W x 6.78"L
Weight: Unit: 1.9 lbs Ant (2): 0.37 lbs Transmitter Power:  100 mW minimum out of transmitter
Frequency: Frequency modulated continuous wave 4.3 GHz center frequency sweep, 4.25 to 4.35 GHz Update Rate: 25 times/sec 
Altitude Accuracy: 0 to 100 ft ± 3 ft 100 to 500 ft ± 3% 500 to 2500 ft ± 5% Display Disable: Strut switch inputs
Self Test: Power-on self test & recurring built-in test Inputs: Strut Switch 
Outputs: RS-485/422, RS-232C FAA: TSO-C87 Precision Equipment
EASA: ETSO-2C87 Environmental: DO-160E
Software: DO-178B, Level C    
Serial # 1843M229
Condition SV
Mods 1-3
Tag Date 10/20/25
Shop FreeFlight Systems
Warranty 6 Months
Serial # 2012M051
Condition SV
Mods 1-3
Tag Date 10/20/25
Shop FreeFlight Systems
Warranty 6 Months
84560-11-300A
- Radar Altimeter Transceiver
Price Condition Status
$7,250.00 SV OUTRIGHT 2 IN STOCK

Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact questions@seaerospace.com


In relation to NE (New) parts, many OEMs change their prices and availability without any notice to dealers or the industry. Therefore, through the REQUEST or RFQ indication, we ask that customers contact us for the most accurate price and availability.

In relation to SV & OH parts, the used parts aftermarket in the aviation industry is not an infinite supply. It is a dynamic, constantly changing market that is significantly affected by and susceptible to highs and lows in supply and demand. Therefore, although we attempt to, at times, we are unable to predict the exact moment when an item may be available. Once again, through the REQUEST or RFQ indication on our website, we ask that customers contact us for the most current and accurate price and availability.

No, the RA-4000 is designed to be used with the RAD40 indicator or interfaced to modern flight displays RS-232/422/485 and ARINC 429 interfaces.
Yes. Free Flight uses part number 9-1203-115-00 in their catalog and installation manual for the radar altimeter antenna used in their RA3500, RA4000, and RA4500 systems. When you inspect these antennas, they are packaged in a Sensor Systems box with the 9-1203-115-00 part number label on the outside of the box. When you open the Sensor Systems box, you can immediately see that it is actually the Sensor Systems S67-2002 antenna. The antenna has the S67-2002 part number on its dataplate.

When replacing the TRA3500 with a RA4500, the only parts that can be reused are the antennas. The change will require different length cables, replacement of interconnect wiring form the RA4500 to an indicator and the indicator needs to be replaced with the RAD40 or other PFD with ARINC 429 input. The original TRI40/TRA3500 system only uses a single coax to interface them together, while the RAD40/RA4500 system will need power, ground and a twisted shielded pair for the data line.

You will also need to consider if the current TRI40 has any audio interface. The RAD40 does not have an external audio connection. If your installation requires an external DH audio output, then an additional tone generator will be needed.

However, if you are only replacing the TRA3500 system and will not be interfacing it to any other equipment, the RA4000 system will perform the same function at a less cost than the RA4500.