Appendix E E-4 The curtailment for passenger seating variation is determined by adding the largest delta moments from each of the passenger zones. In our example, the curtailment to the forward CG limit for passenger seating variation is -22,680 inch-pounds (-5,670 + -5,859 + -5,481 + -5,670 + 0). Similarly, the curtailment to the aft limit of the CG envelope using the window-aisle-remaining method loading from the most aft seat row moving forward (in each zone) would result in an adjustment of +22,680 inch-pounds. These curtailments compare favorably to the curtailments of + 36,666 inch-pounds determined in the sample provided for three passenger zones in Appendix C.
E.4 Actual Male/Female Counts. Loading systems may use separate male and female assumed passenger weights for each operation. If the operator’s W&B program is approved for use of male/female weights, then the operator must count the number of male passengers and female passengers separately. The male and female weights used may be from the development of standard passenger weight or they may be determined through an operator-developed survey. Use of male/female weights may be for entire operations or for a particular route or region.
E.5 Male/Female Ratios. An example of how male/female ratios can be applied to W&B systems follows.
E.5.1 Assuming the operator is using the survey results as described in paragraph E.1 above, the assumed male and female passenger weights, including surveyed average carry-on baggage, are computed as:
Male passenger weight (summer) = 183.3 + 10.4 × 0.82 = 192 lb Male passenger weight (winter) = 192 + 5 = 197 lb Female passenger weight (summer) = 135.8 + 10.4 × 0.82 = 144 lb Female passenger weight (winter) = 144 + 5 = 149 lb E.5.2 The W&B manifest would provide for identification of male/female identification and the passenger weights would be summed accordingly. For instance, 7 male and 11 female passengers would result in a total passenger weight of (7 × 192) + (11 × 144) = 2,928 pounds.
E.6 Adolescent (Child) Weights. In most circumstances, an operator may consider any passenger who is younger than 13 years old and is occupying a seat to weigh less than an adult passenger. The standard average adolescent child weights can be calculated utilizing Table 3-1, Example of Standard Average Passenger Weights, and the latest CDC/NHANES report.
E.7 Automation. Automation may also be used to provide a more accurate W&B program.
Examples of automation include use of seat assignments for the determination of passenger moment and historical seating to determine passenger moment.
Appendix F F-1 APPENDIX F. WEIGHT AND BALANCE CHECKLIST Which operators should use this AC? See paragraph 1.2.
Does the operator use individual aircraft Basic Empty Weights (BEW) or Fleet Operating Empty Weights (FOEW)? See paragraph 2.1.3.
Does the operator have an individual aircraft weighing program or a fleet weighing program?
See paragraph 2.1.4.
Each operator should construct a loading envelope with curtailments. See Chapter 2, paragraphs 2.2 and 2.3.
What is the aircraft cabin size? See paragraph 1.2.2 and Table 1-1, Aircraft Cabin Size.
a. If the aircraft is a large cabin aircraft, then see paragraph 3.1.1.4:
Large Cabin Aircraft
1. For standard average weights, see paragraph 3.2.
2. For survey-derived average weights, see paragraph 3.3.
3. For actual weight programs see paragraph 3.4.
b. If the aircraft is a medium cabin aircraft, then see paragraph 3.1.1.5:
Medium Cabin Aircraft Treated as Large
1. See Large Cabin Aircraft items 1−3 above, and Medium Cabin Aircraft Treated as Small
1. See Small-Cabin Aircraft items 1−2 below.
c. If the aircraft is a small cabin aircraft, then see paragraph 3.1.1.6:
Small Cabin Aircraft
1. If the aircraft meets the performance criteria stated in item 2 under paragraph 3.1.1.6,
a. See paragraph 3.1 for standard average weights and Appendix D, Additional Curtailment to CG Envelopes for Passenger Weight Variations in Small Cabin Aircraft, for additional center of gravity (CG) envelope curtailment, or
b. See paragraph 2.3 for survey-derived average weights and Appendix D for additional CG envelope curtailment.
2. If the aircraft does not meet the performance criteria stated in item 2 under paragraph 3.1.1.6 or the operator elects to use actual weights, then:
a. For actual weight programs see paragraph 3.4.
Advisory Circular Feedback Form If you find an error in this AC, have recommendations for improving it, or have suggestions for new items/subjects to be added, you may let us know by contacting the Air Transportation Division (AFS-200) at 9-AWA-AVS-AFS-200-Air-Transportation-Division@faa.gov or the Flight Standards Directives Management Officer at 9-AWA-AFB-140-Directives@faa.gov.
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