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Private Pilot Airplane practice question 14

(Refer to FAA-CT-8080-2H, Figures 32 and 33.) Which action can adjust the airplane's weight to maximum gross weight and the CG within limits for takeoff? Front seat occupants: 425 lb Rear seat occupants: 300 lb Fuel, main tanks: 44 gal

FAA-CT-8080-2H, Figure 32. Airplane Weight and Balance Tables. U.S. Government work (public domain). Source PDF. Tap to enlarge.

FAA-CT-8080-2H, Figure 33. Airplane Weight and Balance Tables. U.S. Government work (public domain). Source PDF. Tap to enlarge.

Show answer

Correct answer: B. Drain 9 gallons of fuel.

Empty weight 2,015 lb + front 425 + rear 300 + 44 gal fuel (264 lb) = 3,004 lb, 54 lb over the 2,950 lb maximum. Fuel weighs 6 lb/gal, so draining 9 gallons brings the airplane exactly to 2,950 lb. The new moment (1,554 + 361.3 + 363 + 158 = 2,436.3) falls inside the 2,422–2,499 limits for 2,950 lb. Transferring fuel would not reduce weight.

References

Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), ch. 10, Weight and Balance · search it in our library

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Question 14 from the FAA document Private Pilot-Airplane (PAR) Sample Questions (U.S. Government work, public domain) · ACS/LSC code PA.I.F.K2f. The FAA does not publish an answer key; the answer and explanation are ours, with references. Verify against the current regulations and handbooks.