Table Aircraft Volume Ratios
Aircraft Type Cabin Volumes in Cubic Feet Ratio
DC-9 vs CE-650 5,840 vs 576 10:1
B-737 vs LR-55 8,010 vs 502 16:1
B-727 vs NA-265 9,045 vs 430 21:1
L-1011 vs G-1159 35,000 vs 1,850 19:1
B-747 vs Learjet 59,000 vs 265 223:1
Data Source: Physiological Considerations and Limitations in the High-altitude Operation of Small-Volume Pressurized Aircraft.
E. B. McFadden and D. de Steigner, Federal Aviation Administration (FAA) Civil Aeromedical Institute (CAMI).