Aircraft Component Test Benches · MRO Hub / Hydraulic · Fuel · Gearbox · Oxygen / NAS 1638 · AIR 3514 · MIL-L-7808 G / Noida · India

HYDRAULIC · FUEL · ENGINE AIR · GEARBOX · OXYGEN

Aircraft Component Test Benches for Overhaul & MRO

Neometrix builds a test bench for each kind of aircraft component: hydraulic pumps, servo valves and actuators, fuel pumps, nozzles and gauging probes, environmental control units, gearboxes and bearings, oxygen and fire-detection systems, and starter generators. Pick the unit you need to test below, or read our aerospace test bench guide for how these benches are designed, and the standards they follow. For hydraulic benches by part type, see hydraulic test benches.

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Neometrix aircraft fuel system test rig with tilting fuel tank, pump and control cabinet

Fig · 01 Aircraft fuel system test rig — tilting-tank rig for fuel pickup and system testing

Standards referenced:

NAS 1638 AIR 3514 MIL-L-7808 G MIL-STD-1522 AS9100

Machines

28models

Component Families

6groups

Pump Bench

270bar / 130 LPM

Bearing Bench

70,000RPM

Loading Rig

24,000kgf

The range

Aircraft component test benches by unit under test.

Every machine below has its own page with full specifications, photographs and downloads. Choose by the component you need to test.

Hydraulic & flight control

Aerospace Hydraulic Pump / Motor Test Bench

Automated validation of axial piston pumps used in the LCA and other aircraft hydraulic systems.

270 bar · 130 LPM · 6,000 RPM

Hydraulic & flight control

Aircraft Servo Valve Hydraulic Test Equipment

Validates servo valves under aero-engine thermal and pressure conditions.

120 °C ATF · up to 250 kg/cm²

Hydraulic & flight control

Combined Control Unit (CCU) Test Bench

Automated servo-hydraulic testing with frequency response, dynamic load and cyclic performance analysis.

MI-8 and fighter servo units

Hydraulic & flight control

Electro-Hydraulic Multi-Channel Loading Rig

Simulates aerodynamic forces to validate actuators for displacement and redundancy.

Up to 24,000 kgf

Hydraulic & flight control

Hydraulic Filter Test Bench

Validates aircraft hydraulic filters for cleanliness, durability and seal integrity.

35 bar · 150 LPM · NAS 1638 Class 4

Hydraulic & flight control

Aircraft Aggregate Flushing Rig

Purges contamination from pumps, valves and actuators with multi-stage filtration.

Temperature-controlled ATF

Hydraulic & flight control

Boot Strap Reservoir

Aircraft hydraulic reservoir and intensifier module that keeps the pump inlet pressurised during negative-G.

2.5 bar(g) at pump inlet

Fuel system

Aircraft Fuel System Test Rig

Rigs for testing aircraft fuel systems, including tank filling and pickup behaviour.

Engineered to order

Fuel system

Fuel Pump Test Rig

PLC-driven, LabVIEW-controlled pump validation with 32-channel 1 kHz data logging.

0–250 L/min · 0–350 bar · −20 to +120 °C

Fuel system

ATF Pump & Nozzle Pressure Ratio Test Stand

Fuel pump and nozzle certification for aerospace MRO, with mmHg-level precision.

10,000 RPM · 160 kW

Fuel system

Aerospace Nozzle Flow Test Bench

Validates aviation nozzle and oil-jet flow to AIR 3514 and MIL-L-7808 G.

35 °C ±0.1 °C · AIR 3514

Fuel system

FCG Probe Test Rig for LCH

Wet-tank qualification of Light Combat Helicopter fuel gauging probes and level switches.

≤1 mm level resolution

Fuel system

Heated and Cold Fuel Supply Rig

Supplies fuel at controlled temperatures for fuel-system testing, hot and cold.

Engineered to order

Air, engine & instruments

ECS Test Bench – Model A0624

Ground test platform for aircraft Environmental Control System units.

Bleed air 600 °F / 40 psi · 5–1,500 CFM

Air, engine & instruments

Engine Anti-Ice & Bleed-Air Valve Test Rig

Tests valves in hot air, the conditions they actually work in. Engineered to order.

Hot-air valve testing

Air, engine & instruments

Air Data Test Set

Tests altimeters, airspeed indicators, climb indicators and pitot and static lines.

Pitot-static testing

Air, engine & instruments

Altitude Switch Test Rig

Evaluates altitude switch performance and accuracy to MIL standards.

IJT-LSP · 7,600 m threshold

Air, engine & instruments

Engine Compressor Washing Rig

Engine-specific spray rings, metered cleaner delivery and effluent capture. Engineered to order.

Mobile gas-path wash carts

Gearbox, bearing & structure

Gear Box Test Bench

Skid-mounted platform with torque and RPM sensors for R&D and quality control.

Dual hydraulic packs · IIoT

Gearbox, bearing & structure

Helicopter Main Gearbox Load Test Rig

Mast and tail loading frames, lubrication and run-dry systems for rotorcraft transmissions.

Back-to-back torque loop

Gearbox, bearing & structure

70,000 RPM Aerospace Bearing Test Bench

Bearing endurance test rig with vibration sensors and computerised control.

70,000 RPM · FFT analysis

Gearbox, bearing & structure

Aircraft Landing-Gear Shock Absorbers

Indigenisation of legacy fleet struts, with qualification plant and overhaul lines.

Oleo-pneumatic struts

Life support & safety

Aircraft Oxygen System

Ground system that charges, distributes and tests aircrew oxygen.

Booster · trolleys · charging vehicle

Life support & safety

Life Support Oxygen Test Bench

Validates filler valves, regulators and cylinders for pilot safety and oxygen purity.

200 bar · 600 L/min · SS-316L

Life support & safety

Fire & Overheat Detection System Test Rig

Test rigs for the one aircraft system that must never lie in either direction.

Depot-level test equipment

Electrical, avionics & overhaul

Starter Generator Test Rig

Precision testing with vibration analysis for advanced light helicopter starter generators.

ALH starter generators

Electrical, avionics & overhaul

TACAN Unit Test Bench

Automated factory acceptance test with RF stimuli and pass/fail digital reporting.

TACAN 2010 · CAN bus · VSWR

Electrical, avionics & overhaul

Aircraft Component Overhaul Test Benches

Test facilities that produce the evidence an out-of-support component needs before return to service.

Engineered to order

What is tested

What each aircraft test bench proves.

Different components fail in different ways, so each bench is built to catch a specific failure.

Hydraulic & flight control	Pumps, servo valves, actuators and filters are tested for flow, pressure, response and cleanliness under aircraft fluid conditions. See the pump / motor bench, the servo valve equipment and the CCU test bench.
Fuel system	Pumps, nozzles and gauging probes are checked for flow, pressure ratio and accuracy, and tanks are tested as a system. See the fuel pump test rig, the nozzle flow bench and the fuel system test rig.
Air, engine & instruments	Environmental control units, bleed-air valves and pitot-static instruments are tested in the air conditions they work in. See the ECS test bench, the bleed-air valve rig and the air data test set.
Gearbox, bearing & structure	Transmissions and bearings are run under load, and struts are qualified for landing loads. See the helicopter gearbox load rig, the 70,000 RPM bearing bench and the landing-gear shock absorber page.
Life support & safety	Oxygen regulators, cylinders and fire detection systems are tested because they must never fail silently. See the oxygen test bench and the fire and overheat detection rig.
Electrical, avionics & overhaul	Starter generators and navigation units are tested electrically, and overhaul benches produce the evidence needed to return a unit to service. See the starter generator rig, the TACAN test bench and the overhaul test benches.

Choosing

Choosing an aircraft component test bench.

Five questions settle most selections.

Start with the component and the manual you work to — the bench follows.

Which component? The unit under test decides the bench family above.
Which aircraft? Fixed-wing, helicopter or legacy type changes fittings, ports and loads.
Overhaul or acceptance? A depot overhaul bench follows the overhaul manual; an acceptance bench follows the factory specification.
Which fluid and temperature? Aircraft work often needs ATF or fuel at a controlled temperature and filtered to a stated cleanliness class.
Which standard applies? Tell us the specification, such as NAS 1638 or AIR 3514, so the bench can be configured to match.

For background reading, see our guides to aerospace test benches and hydraulic valve testing.

FAQ

Frequently asked questions.

Plain-language answers, drawn from the individual product pages.

Q · 01 What is an aircraft component test bench?

An aircraft component test bench exercises a single aircraft unit, such as a pump, valve, fuel gauge, gearbox or oxygen regulator, outside the aircraft and checks it against its specification. It is used for overhaul, repair, acceptance and R&D, so a unit is proven before it returns to service.

Q · 02 Which aircraft components can Neometrix test?

Neometrix builds benches for hydraulic pumps, motors, servo valves, actuators and filters; fuel pumps, nozzles and gauging probes; environmental control units, bleed-air valves and air data instruments; gearboxes, bearings and landing-gear struts; oxygen and fire-detection systems; and starter generators and navigation units.

Q · 03 Do you build benches for overhaul and MRO?

Yes. Several benches are built for depot-level overhaul and MRO, including the fuel pump and nozzle test stand, the fire and overheat detection rig and the aircraft component overhaul test benches. Tell us the component, the aircraft type and the overhaul manual you work to.

Q · 04 Can you build a bench for a legacy or out-of-support aircraft?

Yes. Many benches are engineered to order, including indigenisation work for legacy fleets such as the landing-gear shock absorber and the HS-748 hydraulic test rig. Send the component, its drawings or manual, and the test pressure, flow and standard.

Q · 05 Which standards do these benches reference?

Standards are cited per bench: NAS 1638 Class 4 cleanliness on the filter bench, AIR 3514 and MIL-L-7808 G on the nozzle flow bench, and MIL standards on the altitude switch rig. Our aerospace test bench guide covers MIL-STD-1522 and AS9100 in more depth. Other benches are built to customer-specified requirements.

Q · 06 How is this different from your aerospace test bench guide?

The guide explains how aerospace test benches are designed, which standards apply and how factory and site acceptance work. This page is the product range: pick the component you need to test and go straight to the matching bench.

Q · 07 What is a bootstrap reservoir?

A bootstrap hydraulic reservoir is a pressurised reservoir that keeps the pump inlet supplied during manoeuvres. The Neometrix boot strap reservoir is an aircraft hydraulic reservoir and intensifier module whose reverse intensifier maintains 2.5 bar(g) at the pump inlet during negative-G for cavitation-free flight, in 2.75 L and 4.25 L modules.

Q · 08 Do you make gearbox test benches for the aircraft industry?

Yes. The gear box test bench is a skid-mounted platform with dual hydraulic packs, torque and RPM sensors, PLC / PC automation and IIoT connectivity, and custom industrial gearbox test benches are engineered to order. For helicopters, the main gearbox load test rig uses a back-to-back torque loop with mast and tail loading frames.

Q · 09 Can you test OEM hydraulic pumps, motors and aircraft generators?

Yes. The aerospace pump / motor bench provides OEM hydraulic pump and motor testing to 270 bar, 130 LPM and 6,000 RPM, and the starter generator test rig tests aircraft starter generators with vibration analysis.

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