Which instrument is used to monitor loads on the MLGs?

• A. Altimeter
• B. Tire pressure gauge
• C. Brake pressure gauge
• D. Tension link scale indicators

Answer: (D)

Loads on the main landing gear are monitored using tension link scale indicators. These indicators read the tension in the load-sensing links attached to the MLG and convert it into a readable scale that shows how much weight each gear is carrying. This information is vital during ground handling and towing because it helps ensure the aircraft stays within structural and tire limits and that weight distribution is safe between the left and right MLGs. Watching the readings allows you to detect overweight conditions, uneven loading, or changes in weight during loading or unloading. Other instruments measure altitude, tire pressure, or brake hydraulic pressure, but none directly show the load on the MLG, which is why tension link scale indicators are used for this purpose.