What Is an Aircraft Landing System and How Does It Work?

An aircraft landing system is the assembly that supports the aircraft on the ground and manages every phase of takeoff and touchdown: the landing gear structure, wheels and tires, brakes, shock absorbers, and the actuation and control components that extend, retract, and regulate them. It works as a chain—actuation releases the gear, struts and shock absorbers absorb the touchdown load, and wheels, brakes, and anti-skid bring the aircraft to a controlled stop. Because these parts are safety-critical and wear quickly, landing systems are also one of the most active areas of component maintenance, repair, and overhaul (MRO).

The main parts of a landing system

AMETEK MRO lists landing systems alongside actuation, aviation safety avionics, power generation, and thermal management as one of the component families it supports, and describes itself as servicing more than 40,000 unique aircraft parts across commercial, regional, general aviation, helicopter, and military markets.

How the system works, step by step

1. Extension before landing

The gear is released from its stowed position, typically by hydraulic or electromechanical actuation, and locks into the down position. Actuation is the input here: a command from the flight deck drives the mechanism, and the expected result is gear that is down and locked, ready to accept load.

2. Touchdown and load absorption

On contact, the shock absorber compresses and forces hydraulic fluid through an orifice, converting vertical motion into heat and slowing the compression. The strut then extends again in a controlled way. This is the mechanism that keeps a hard touchdown from becoming a structural event—without it, the full impact would pass directly into the airframe.

3. Rolling and directional control

Wheels and tires carry the aircraft while it rolls out. Nose-wheel or main-gear steering keeps it on the centerline at low speed.

4. Braking and anti-skid

Brakes apply friction to the wheels, and the anti-skid function releases and reapplies pressure when a wheel begins to lock. The result is stopping distance matched to the runway surface rather than a skid.

5. Retraction after takeoff

Once airborne, actuation stows the gear again, reducing drag for the climb and cruise phases.

Maintenance and repair considerations

Landing system components are exposed to high loads, heat from braking, and runway debris, so they are inspected and overhauled on scheduled intervals. Practical points to check when selecting a repair provider:

• Platform coverage — confirm the provider supports your specific aircraft type, not just the component category.
• Certification — look for aerospace quality certifications relevant to the work; AMETEK MRO's Drake Air unit, for example, is described as an AS9110/9100-certified MRO Center of Excellence.
• In-house capability — providers that combine repair with manufacturing resources can sometimes offer alternatives to outright replacement. Drake Air's Nu-Matrix process, an FAA-approved DER core replacement method, is an example of restoring a component rather than replacing it.
• Turnaround and scope — ask whether test, repair, and overhaul are all handled at one location.

For operators, the practical takeaway is that a landing system is only as reliable as its weakest serviced part, so matching component repair scope to the actual platform and certification requirements matters more than the breadth of a provider's catalog.