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What's the average aisle width for long range business jet such as Gulfstream G500?

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Based on this cabin layout of a Gulfstream G500 found on flexjet.com, I measured the aisle width at various places:

G500 cabin layout

The total width is given as 7' 11'' = 241.3cm. The aisle width at the marked positions is then:

  1. 63cm (2' 1'')
  2. 68cm (2' 3'')
  3. 44cm (1' 5'')
  4. 51cm (1' 8'')
  5. 46cm (1' 6'')
  6. 57cm (1' 10'')
  7. 50cm (1' 8'')

This would give an average of 54cm (1' 9'') over the measured positions.

Interestingly, the narrowest part (44cm) is less than the FAA minimum for transport category aircraft with more than 10 seats (Is there any limit on how narrow aisles can be?), which would be 20in = 50.8cm.

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    $\begingroup$ :-) I tried to use that very same image from flexjet but had difficulties with its transparent background. Lucky you. jetadvisors.com gives slightly different dimensions (7,3 ft cabin and 5,5 ft floor), but I doubt them. Oh, and I just helped you over the 8,000 points mark. Congrats. $\endgroup$
    – PerlDuck
    Commented Oct 9, 2019 at 8:24
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    $\begingroup$ @PerlDuck I think the 7.3 ft would be the full cabin from the inside, the scale in the used picture is including the fuselage. $\endgroup$
    – Bianfable
    Commented Oct 9, 2019 at 8:31

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