Now crew moment = 410 kg × 142.0 m = 58,220 → Crew Index = 58,220 / 10,000 = 5.822 ≈ 5.8.
? No — wrong; Index is not average.
So DOI = 112.4 + 2.4 = and DOM = 34,560 + 410 = 34,970 kg . easa atpl question bank
From BEM: Index 112.4 at 34,560 kg implies: Index = (Mass × Arm) / 1000? Let’s check: (34,560 × Arm_BEM)/1000 = 112.4 → Arm_BEM = (112.4 × 1000) / 34,560 ≈ 3.25 — impossible (too small). So not /1000. Now crew moment = 410 kg × 142