Beechcraft 99 Airliner — Weight Balance

This advisory circular provides updated methods and procedures for developing an approved weight and balance control system for small aircraft operating in the air taxi fleet under Federal Aviation Regulation (FAR) Part 135. It outlines the requirements for operators to ensure that their aircraft are loaded within the authorized weight and balance limitations. The document is intended for air taxi operators and provides guidance on establishing, monitoring, and adjusting empty weight and center of gravity, as well as creating loading schedules and load manifests. It emphasizes the importance of accurate weight and balance calculations to maintain safety during operations.

• Average passenger weight is 160 lbs in summer and 165 lbs in winter.
• Children aged 2-12 are averaged at 80 lbs for weight calculations.
• Each piece of checked baggage averages 23.5 lbs, and hand baggage averages 5 lbs.
• Aircraft must be reweighed if weight changes exceed 0.5% of empty weight or CG changes exceed 0.5% of the mean aerodynamic chord.
• Loading schedules must ensure the aircraft remains within weight and balance limits throughout the flight.