Based in the UK, we are global suppliers of landing gear solutions for all types of aircraft including military helicopters, advanced fighter jets, civil airliners and business jets.

Part of Heroux Devtek

APPH has a proud history within in the UK dating back to pre-war times. Specialising in designing, engineering, manufacturing and supporting systems and sub systems for original equipment and aftermarket products, we are respected worldwide.

As part of the Canadian Group, Heroux Devtek, APPH is now known as Heroux Devtek UK (HD UK).

Our Product Services

Engineering Design, Development & Testing

Where ideas originate, innovative solutions explored and systems are tested.


A vital element in the development process at HG UK is the testing of the equipment to verify functional and environmental performance.

Machining Capability

HD UK is a machining Centre of Excellence with extensive CNC capability.

MRO Services

Mechanical, Pneumatical, Hydraulic components, Landing Gears, fuel systems, EMA’s, Electronic Control Units, electric generators and cooling / air conditioning equipment, offering flexible Maintenance solutions for OEM and Non-OEM components.

Processing Capabilities

Ultra-modern processing facilities with wide ranging capability to complement our manufacturing activities.


Fully equipped with the latest technologies to drive our work efficiency.

APPH Group has been designing and manufacturing aircraft hydraulic systems for many years.

Having grown organically and through acquisition, the company is respected worldwide as a provider of hydraulic systems and landing gears for diverse civil and military markets.