FA-65923 / Aviation weight and balance / Member archive

Loaded item weights left out of the conversion weight · case 03

%MAC drifts further from the chart the heavier the payload, while the index itself is correct.

Member previewVariant 3 · 3 implementations · 9 checks per implementation

Case contract

Input {'dow','doi','ref','c','k','lemac','mac','items':[[kg,arm m]]}. Item index = kg*(arm-ref)/c; the dry operating index already contains K. Total index = doi + item indices; CG arm = ref + (index-K)*c/total weight; %MAC = (CG-LEMAC)/MAC*100. Return [index r2, %MAC r1].

Why this case matters

Airline loadsheets carry balance as a dimensionless index offset by K; converting back to %MAC requires removing K and scaling by C over total weight.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
typical cabin and hold	`[49.5, 37.2]`	`[49.5, 37.3]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.