Indisputably, aircraft landing gear is one of the most important elements on any aircraft. It acts as support for the entire weight of the aircraft for takeoff, landing, and taxiing and also has the job of absorbing huge amounts of impact each time the aircraft touches down. It’s no wonder then, given these these taxing conditions, that keeping aircraft landing gear in top shape is absolutely crucial for safety, reliability, and long-haul performance.
Why Landing Gear Maintenance Matters
Landing gear systems undergo near-constant stress during their life span. Elements such as struts, wheels, brakes, bearings, hydraulic systems, and actuators are expected to become worn with time. Skipping frequent inspections and or overlooking preventive maintenance can lead to small issues quickly escalating into expensive repairs and critical safety risks.
Regular maintenance is important for many reasons, including:
- Ensuring safety during takeoff and landing.
- Mitigating the risk of surprise mechanical issues.
- Reducing costly AOG and emergency repairs.
- Increasing the duration of landing gear components health and productivity.
- Remaining in compliance with aviation regulations and manufacturer requirements.
Frequent inspections also mean that maintenance teams can identify problems like corrosion, hydraulic leaks, worn bushings, damaged seals, and fatigue cracks early… before they impact safety or performance.
How Often Does Landing Gear Need to Be Replaced?
There isn’t a single answer to this question, as replacement schedules differ between aircrafts. That said, the lifespan of aircraft landing gear comes down to a few key factors. These elements include:
- Aircraft model
- Total flight hours
- Landing cycles
- Operating environment
- Maintenance history.
The recommendation by most manufacturers for landing gear overhaul or replacement is typically based on flight hours, calendar time, or landing cycles. For commercial aircraft in general, a full landing gear overhaul is usually done every 8 to 12 years. This timeline, however, will vary across aircraft types and operators. Single wear items like tires, brakes, bearings, and hydraulic seals will demand replacement with much higher frequency during scheduled maintenance.
Of course, the best way to stay safe and compliant with dependable landing gear is to follow the manufacturer’s maintenance program.
When Landing Gear Needs Attention
In between regular maintenance cycles, operators should monitor landing gear for any sign that could translate as the need for inspection or repair. These include:
- Unfamiliar vibration while landing or taxiing.
- Hydraulic fluid leaks.
- Noticeable tire wear or uneven tread.
- Corrosion or damage.
- Unusual noises resulting from gear extension or retraction.
Seeing to these warning signs early can help avoid further damage and help keep repair costs down.
Final Thoughts
Aircraft landing gear is a critical part of every single flight, which makes regular maintenance and prompt replacement crucial for safe operations. By adhering to manufacturer recommendations, replacing worn components, and working with trusted maintenance professionals, aircraft owners and operators can ensure the safety of their fleet, reduce operating costs, extend part life, and improve aircraft reliability over the long term.