Hi Guys
I had the old AWN 70 so heres what it says >>>>>>>
A fatal accident involving cabin decompression and fire has highlighted another mode of
tyre failure in flight where a tyre may fail explosively without any significant prior
degradation. A tyre inflated with air and subjected to excessive heating, possibly caused
by a dragging brake, can experience a chemical reaction resulting in release of volatile
gases. Such a chemical reaction in the presence of the oxygen in the contained air may
result in a tyre explosion in a landing gear bay and/or an in-flight fire since it appears that
the protection normally afforded by conventional pressure relief devices in the wheel
would be incapable of responding adequately to the rapid increases in temperature and gas
pressure associated with auto-ignition.
2.4 Laboratory material and tyre burst testing indicates that the risk of auto-ignition can be
reduced by using an inert gas for tyre inflation and servicing.
2.5 Other potential benefits may accrue from the use of Nitrogen as it will tend to reduce
wheel corrosion, tyre fatigue and the risk of fire when fusible plugs melt due to brake
overheating.
Sure the CAA wont mind its been moved now anyway.