Are the max imbalance and the max imbalance before landing the same value for the ERJ 175?

Are the max imbalance and the max imbalance before landing the same value for the ERJ 175?

• A. Yes, both are 794 lbs
• B. No, before landing is different
• C. No, the values are 600 lbs and 794 lbs
• D. No, the numbers are not comparable

Answer: (A)

The key idea here is lateral balance: there's a fixed limit on how much weight you may have on one side of the aircraft relative to the other. For the ERJ 175, that limit is 794 pounds, and it applies regardless of flight phase. Because the same handling and control characteristics—how the aircraft rolls and yaws and how much rudder and aileron authority you have—depend on keeping that left-right weight difference within a single bound, the maximum imbalance you may have just before landing is the same value as the general maximum imbalance. In practice, fuel burn and payload changes shift the imbalance during flight, but you must ensure the difference never exceeds 794 pounds at any point, including the approach and landing. That’s why the choice stating both are 794 pounds is correct. The other options imply a different pre-landing limit or introduce a different number, which isn’t how the ERJ 175’s lateral balance limit is defined.

The key idea here is lateral balance: there's a fixed limit on how much weight you may have on one side of the aircraft relative to the other. For the ERJ 175, that limit is 794 pounds, and it applies regardless of flight phase. Because the same handling and control characteristics—how the aircraft rolls and yaws and how much rudder and aileron authority you have—depend on keeping that left-right weight difference within a single bound, the maximum imbalance you may have just before landing is the same value as the general maximum imbalance.

In practice, fuel burn and payload changes shift the imbalance during flight, but you must ensure the difference never exceeds 794 pounds at any point, including the approach and landing. That’s why the choice stating both are 794 pounds is correct.

The other options imply a different pre-landing limit or introduce a different number, which isn’t how the ERJ 175’s lateral balance limit is defined.