UA28A-14 Aircraft Inertial Sensor

The UA28A-14 is an aircraft inertial sensor designed to detect wheel slip during aircraft braking operations. The sensor is part of the aircraft anti-skid braking system and generates an electrical signal when rapid wheel deceleration indicates the onset of a skid condition.

UA28A-14 Sensor in Aircraft Anti-Skid Systems

The UA28A-14 operates within aircraft landing gear braking systems and is installed in the wheel hub assembly. The sensor monitors wheel rotational dynamics and transmits signals to the braking control system to prevent wheel lock and ensure stable braking during landing and taxiing.

UA28A-14 Operating Principle and Design

The UA28A-14 inertial sensor operates using a mechanical flywheel installed inside the sensor housing. When the wheel experiences rapid deceleration during braking, the inertial flywheel rotates relative to the sensor body and activates an internal microswitch, generating a signal that triggers the electrohydraulic brake release valve.

UA28A-14 Aircraft Applications

The UA28A-14 sensor is used in aircraft anti-skid braking systems installed on aircraft such as An-24, An-26 and L-410. In standard configurations the UA28A-14 sensor is installed on the right landing gear wheel, while the UA28A-13 sensor is installed on the left wheel.

Alternative designations: UA28A-14, УА28А-14 — refer to the same product type.

Product Type: Aircraft inertial anti-skid sensor
Function: Detection of wheel slip during braking and signal generation for anti-skid systems
Application / Where Used: Aircraft landing gear braking and anti-skid systems
System / Installation Area: Landing gear wheel hub assembly
Operating Principle: Inertial flywheel with microswitch activation during rapid wheel deceleration
Associated Equipment: Anti-skid control unit, electrohydraulic brake release valves
Compatible Aircraft / Equipment: An-24, An-26, L-410 and similar aircraft
Weight: Approximately 0.5–0.8 kg
Operating Mode: Continuous monitoring during braking
Technical Documentation: Product passport / official technical documentation

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