Skip to content

Helicopter modePerformance

calculateExternalLoadCG

Compute longitudinal CG with an external load (Class A/B/C/D under 14 CFR 133).

ProblemWhat it solves

The problem this tool solves

External load CG shifts are easy to miscalculate.

Example interaction

Pilot asks

Bell 407, 600 lb external load on 100 ft long-line, internal weight 3,800 lb. CG?

Copilot responds

Computed CG aft 2.1 in from internal-only baseline. Within Cat-B envelope per 14 CFR 133 Subpart D.

RegulationCited reference

Related FAR

14 CFR 133

Try calculateExternalLoadCG in the Copilot

The Copilot reaches for this tool whenever the conversation calls for it.