066-1048-00

BendixKing KRA 405 unit 066-1048-00

066-1048-00 is the exact BendixKing Part Number for this KRA 405 radar altimeter receiver/transmitter. The remote-mounted unit sends a radio-frequency signal toward the surface, receives the reflected return and supplies radar-height information to compatible aircraft equipment. It is the electronic receiver/transmitter, not a complete cockpit system by itself.

The complete -00 suffix must remain in the identification. The earlier KRA 405 and later KRA 405B are related model families but have different interfaces and certification details. In particular, approved Garmin interface documentation distinguishes the analog KRA 405 from the KRA 405B configuration that also provides an ARINC 429 interface. Specifications from the 405B have not been copied into this card.

Radar-altitude measurement and signal chain

A typical system path is KRA 405 transmitter → approved transmit antenna → reflection from terrain or water → approved receive antenna → KRA 405 receiver and processing circuits → compatible analog indicator or approved aircraft consumer. The unit measures geometric height above the reflecting surface, which differs from barometric altitude referenced to atmospheric pressure.

The front of the exact unit carries separate RCVR and XMTR radio-frequency connections and a covered multipin aircraft connector. Both antenna paths, coaxial cables, bonding and the aircraft connector are necessary for correct operation. A functional receiver/transmitter cannot provide useful cockpit information without compatible antennas, wiring and indication equipment.

Exact -00 plate specifications

The authentic manufacturer plate identifies the product as a KRA 405 Radar Altimeter RCVR/XMTR Unit with Part Number 066-1048-00 and serial number 2730. The plate states 27.5 VDC at 0.9 A, a weight of 6.6 lb, approximately 2.99 kg, TSO C87 and DO-138.

These exact plate values take priority over generic figures for a KRA 405B or another KRA 405 suffix. Reliable exact values for measuring range, accuracy, operating frequency, overall dimensions, connector pin assignment and environmental limits were not confirmed from authoritative open data for 066-1048-00. They must be taken from the approved KRA 405 installation and maintenance documentation.

Installation and fault-isolation checks

Before installation, verify Part Number 066-1048-00, equipment rack, connector keying, 27.5 VDC supply, circuit protection, antenna type, antenna spacing, coaxial-cable loss, bonding, analog output compatibility and any aircraft-specific trip or warning connections. A similar enclosure or yellow KRA 405 legend does not establish interchangeability.

Post-installation testing should cover built-in or ramp-test response, indicated height, warning or trip functions, antenna paths and behavior at the approved test points. A radar-altitude fault can originate in the receiver/transmitter, indicator, antenna, coaxial cable, power supply, bonding or aircraft wiring. Technicians should isolate the complete chain before replacing the KRA 405.

The exact modification markings on the photographed plate should be compared with the aircraft records. Any proposed substitution with a KRA 405B, different suffix or modern filtered radar altimeter requires approved engineering data and may involve changes to wiring, outputs, rack, connectors or antennas.

Overhauled supply and ordering information

This 066-1048-00 KRA 405 is offered in Overhauled condition from partner stock with a six-month warranty. The quotation will identify the allocated serial number, overhaul source, current test status, release certificate and the exact accessories included with the unit.

For an inquiry, specify Part Number 066-1048-00, model KRA 405, aircraft type, installed indicator, antenna configuration, quantity and required certification. Antennas, indicator, rack, mating connector and coaxial cables are supplied only when expressly listed. Related avionics can be reviewed in the Garmin / BendixKing / Honeywell / Collins category; related radar-altimeter components are not automatically interchangeable.

Receiving inspection should record the serial number, connector condition, RF-port condition, mounting surfaces and seal status before installation. These observations create a traceable baseline and help distinguish a component fault from transport damage, antenna-path problems or an aircraft installation discrepancy during later troubleshooting.

Because this is a legacy analog unit, installation approval and available support data should be reviewed before purchase. The operator should confirm that its indicator, test equipment and maintenance program still cover the exact KRA 405 configuration and suffix.

Product Type: Radar altimeter receiver/transmitter

Manufacturer: BendixKing / King Radio

Model: KRA 405

Designation: 066-1048-00

Alternative Designations: KRA405; KRA-405; 066104800; Bendix/King KRA 405 -00

Main Function: Transmits and receives radar-altimeter signals and supplies calculated height-above-ground information

Documented Output Type: Analog interface according to approved Garmin compatibility data for KRA 405

Typical Signal Chain: Transmit antenna → terrain reflection → receive antenna → KRA 405 → compatible analog indicator or aircraft consumer

Front Connections: Separate RCVR and XMTR RF connections plus covered aircraft connector

DC Power Supply: 27.5 V DC according to the exact plate

Current Consumption: 0.9 A according to the exact plate

Weight: 6.6 lb / approximately 2.99 kg according to the exact plate

Qualification Marking: TSO C87 according to the exact plate

Document Reference: DO-138 according to the exact plate

Photographed Serial Number: 2730

Measuring Range and Accuracy: Refer to approved KRA 405 component data for 066-1048-00

Exact Dimensions: Refer to the approved KRA 405 installation drawing

Connector and Pin Assignment: Verify through applicable KRA 405 installation and aircraft wiring data

Interchangeability: Complete suffix, analog interface, rack, connector, antennas, wiring and aircraft approval must be verified

Condition: Overhauled

Warranty: 6 Months

Delivery Set: Antennas, indicator, rack, mating connector and coaxial cables only when expressly included

Technical Documentation: Applicable BendixKing KRA 405 installation, test and aircraft maintenance data

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Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.