On large aircraft, braked wheel assemblies are normally inflated with
- nitrogen.
- nitrogen and not more than 5% of air.
- an argon and CO2 mixture.
Explanation from PART66Online
Tyres on braked wheels are charged with an inert gas whose oxygen content must not exceed 5 per cent by volume, so the answer naming that limit is the correct one. Bare nitrogen understates the requirement, and an argon and carbon dioxide mixture is not the servicing medium used.
S
soonhchong asked · 11 May 2012
refer to JAR 25.733 Tyres (e)
tyres mounted on brakedwheels must be inflated with dry nitrogen or other gases shown to be inert so that the gas mixture inthe tyre does not contain oxygen in excess of 5% by volume..
nitrogen and not more than 5% of air, will be more correct?
Community Comments (1)
K
karol288
24 Jun 2025
The same question was before and correct answer there is Nitrogen and not more than 5% of air
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