Certified Flight Instructor - Flight Instructor Airplane Practice Exam

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Prepare to excel in your Certified Flight Instructor exam with engaging flashcards and multiple choice questions, each featuring hints and explanations. Master the knowledge you need for success and achieve your certification with confidence!

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Can shifting 100 pounds from Station 30.0 to Station 120.0 exceed the aft CG limit?

  1. Yes; CG would remain at Station 115.8

  2. No; new CG would be at Station 118.15

  3. Yes; new CG would be at Station 117.69

  4. Yes; CG would be unaffected

The correct answer is: Yes; new CG would be at Station 117.69

To determine if shifting 100 pounds from Station 30.0 to Station 120.0 can exceed the aft center of gravity (CG) limit, one must calculate the new CG position after making the weight shift. The formula for calculating the new CG involves the moments about the center of gravity and the total weight. By moving the weight from Station 30.0 (which is relatively forward) to Station 120.0 (which is further aft), the overall CG position will change since you are moving weight towards the back of the aircraft. In this case, moving the weight shifts the effective CG to a location that is further back than originally calculated, specifically resulting in a new CG at 117.69. If this figure exceeds the aircraft's aft CG limit, it indicates improper weight distribution and potential stability issues. Thus, the correct answer indicates that this shift does indeed lead the aircraft to have a new CG that may be too far back, confirming that such weight movements need to be carefully monitored for compliance with safe operational limits.