Upgrade from Cat-I to Cat-II Standards

[sharpshooter41]

Hello

What all does it take to upgrade an airfield facilities from Cat-I to Cat-II standards and conversely what degradation in equipment makes it from Cat-II to Cat-I.

Thanks in advance

[spekesoftly]

A quick off-the-cuff reply, without the relevant docs to hand; the following may need upgrading/installing/implementing:

ILS installlation, airfield lighting, CATII holding points, back-up power supplies, IRVR, airfield safe-guarding and ATC LVP procedures, approval from the national aviation regulator.

In the UK, generally if something is degraded during CATII ops, ATC inform the pilots, and they decide whether or not to abandon the approach, but the far field monitor must remain serviceable.

[rymle]

And stopbars (?!)

[spekesoftly]

And stopbars (?!)

Yep, it's part of the airfield lighting.

[Spitoon]

And the culture may need to change also. AWOs need to be taken very seriously.

[jangler909]

To my knowledge, stopbars are not a requirement. Might depend on the country? Biggest investments probably are installation of TDZ&CL-lights, if ILS-system is technically already CAT II -capable.

[ron83]

Major investments could be also Taxiway centre lights,which I think are a requirement.

[chevvron]

In the UK, stop bars are required to operate when the RVR is less thasn 1200m. Don't forget you must also have a 3 deg GP, not 2.5 not 3.5.