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  • Chapter 6: Aircraft Weight & Balance › Temporary Ballast

    that the airplane’s weight was reduced by 22.5 lb and the CG has moved forward 0.67". Use of Ballast Ballast is used in an aircraft to attain the desired CG balance, when the CG is not within limits ... forward as possible to bring the CG within limits, while using a minimum amount of weight. Temporary Ballast Temporary ballast, in the form of lead bars, heavy canvas bags of sand, or lead shot, is often carried in the baggage…

  • Chapter 6: Aircraft Weight & Balance › Permanent Ballast

    Permanent Ballast If a repair or alteration causes the aircraft CG to fall outside of its limit, permanent ballast can be installed. Usually, permanent ballast is made of blocks of lead painted red and marked “Permanent Ballast–Do Not Remove ... attached rigidly enough that it cannot be dislodged by any flight maneuvers or rough landing. The installation of permanent ballast results in an increase in the aircraft empty weight, and it reduces the useful load. Three things must be known…

  • Chapter 2: Weight and Balance Theory › Shifting the Balance Point or CG › Basic Weight and Balance Equation

    inches. To balance the lever at its center, weight B must be placed so its CG is 25 inches to the left of the center of the lever. [Figure 2-13] Figure 2-13. Weight distribution to balance lever. Figure ... indicates that the shift in weight depicted in Figure 2-13 allows the lever to balance as the sum of the moments is zero. Figure 2-14. Weight shift provides correct CG. Basic Weight and Balance Equation The following formulas…

  • Chapter 2: Weight and Balance Theory › Shifting the Balance Point or CG › Solution by Chart

    verify that this is the correct balance point, move the datum 40 inches to the left of the original datum and determine the arm of each weight from this new datum as in Figure 2-9. Figure 2-9. Locating ... balance point with datum left of original. The new arm for weight A would be –100 + 40 = –60; for weight B, –60 + 40 = –20; and point C, is +40. The lever is balanced and the balance point is correct when…

  • Chapter 6: Aircraft Weight & Balance › Weight & Balance Terminology › Maximum Weight

    Maximum Weight The maximum weight is the maximum authorized weight of the aircraft and its contents, and is indicated in the Aircraft Specifications or TCDS. For many aircraft, there are variations to the maximum allowable weight depending on the purpose ... under which the aircraft is to be flown. For example, a certain aircraft may be allowed a maximum gross weight of 2,750 lb when flown in the normal category, but when flown in the utility category, which allows…