FA-65939 / Aviation weight and balance / Member archive

Taxi fuel added to the maximum ramp weight · case 04

Ramp-limited departures are allowed more takeoff weight than the aircraft may weigh on the ramp.

Member previewVariant 4 · 3 implementations · 9 checks per implementation

Case contract

Input weights in kg. Allowed takeoff weight = lowest of MTOW, MLW+trip fuel, MZFW+takeoff fuel, MRW-taxi fuel; ties go to the earlier entry in that order. Allowed payload = allowed TOW - OEW - takeoff fuel, floored at 0. Return [allowed TOW, payload, limiting name].

Why this case matters

The classic loadsheet payload limitation takes the lowest of four structural limits, each translated to a takeoff weight with the correct fuel quantity.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
ramp limited heavy taxi	`[70000, 8000, "MTOW"]`	`[69696, 7696, "MRW"]`	Failed

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