weight balanceFAA-published sample question (CAX, Aug 2021)
(Refer to FAA-CT-8080-1E, Figure 38.) Given the following information, does the weight of the aircraft and center of gravity fall within allowable limits? Empty Weight (oil is included) = 1,275 lb Empty Weight moment (in-lb/1,000) = 102.05 Pilot and copilot = 390 lb Rear seat passenger = 145 lb Cargo = 95 lb Fuel = 35 gallons
FAA Figure 38Loading graph and center-of-gravity envelopeFAA-CT-8080-1E · Commercial Pilot supplement
A
Yes, the weight and center of gravity is within allowable limits.✓ Correct Answer
B
No, the weight exceeds the maximum allowable.
C
No, the weight is acceptable, but the center of gravity is aft of the allowable limits.
Explanation
Total weight is 1,275 + 390 + 145 + 95 + 210 (35 gallons x 6 lb) = 2,115 lb, below the 2,200 lb maximum. From the loading graph the moments/1,000 are about 35.4 (pilots), 18.1 (rear passenger), 11.0 (cargo) and 18.9 (fuel); added to 102.05 that is about 185.5. On the normal-category envelope, 2,115 lb allows roughly 182 to 190, so the loading is within both weight and center of gravity limits.
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