A-037 Version 4

The A-037 Version 4 is a complete airborne radio altimeter system designed to measure the true flight altitude of a helicopter above any surface — land, water, or uneven terrain.

Variant 4 configuration includes:
• A-037-1G transceiver — RF generation, transmission and reception;
• A-034-4-17 indicator — analog pointer display and height warning outputs;
• Two A-037-2 antennas — transmitting and receiving;
• GU4.137.080-01 mounting/harness set;
• GU4.850.668-03 interconnecting cable.

The A-037 system provides the crew and onboard avionics with:
• continuous indication of current altitude on the pointer scale;
• visual and aural low-altitude warning when descending below the preset height on the indicator;
• failure warning — a red flag on the indicator when the system malfunctions or loses radar return from the surface.

The system operates using continuous-wave radar with frequency modulation.
Altitude is calculated from the time delay of the reflected signal, allowing real-time measurement across the operating range.

Alternate / Alternative names:
A-037 Variant 4, A037-V4, A-037-4, A-037-1G + A-034-4-17 kit

Operational use is permitted only under aircraft technical documentation.
Accuracy, reliability, and electrical requirements match manufacturer passport data.

Product Name: Radio Altimeter Set
Part Number: A-037 Version 4
Product Type: True-altitude measuring system

Included Units:
– Transceiver A-037-1G
– Indicator A-034-4-17
– A-037-2 antenna, 2 pcs
– Mounting/harness GU4.137.080-01
– Cable GU4.850.668-03

Function: Measurement of true height above terrain/water
Operating Principle: CW radar with frequency modulation

Measurement Range, m: 0…300
Display Range, m: 0…300

Operating Frequency Range, GHz: 4.2…4.4
Built-In Test Reliability: ≥0.95

Mean Time Between Failures, h: 3000

Power Consumption (max):
– 115 V, 400 Hz supply: 10 VA
– 27 V supply: 30 W

Dimensions:
– Transceiver: 277 × 124 × 88 mm
– Indicator: 136 × 85 × 85 mm
– Antenna: 136 × 56.5 mm

Weight:
– Transceiver: 2.7 kg
– Indicator: 1.1 kg
– Antenna: 0.2 kg each

Outputs / Warnings:
– Audible + visual low-altitude alert
– Fault indication (red flag)

Documentation: Passport + operating manual

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

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.