Originally Posted by wince
Pilot Pete,
EGSS NOTAM:
DUE RESURFACING, RWY CL AND TDZ LIGHTING NOT AVBL. RWY LEAD ON/OFF WHERE AFFECTED WILL BE REPLACED BY BLUE EDGE LIGHTS. 02 APR 05:00 UNTIL 31 OCT 05:00
so this means no CATIII autoland at night right?
According to the Downgraded Equipment List affect on minima, the notam would suggest;
CATIII A and B approaches not allowed at night due to no centreline lights.
This would over-ride the increased minima of 300m RVR for night CatIIIB, or 500m for CATIIIA, due to no TDZ lights.
For those not familiar with such things it makes sense because you are getting very close to the ground on a CATIIIA approach (haven't checked Stansted, but 50 feet RA is a usual CATIIIA Decision Height). At this point you are seeking your visual reference, which for CATIIIA is:
"3 consecutive lights: being any combination of:The centre of the Approach or TDZ lights or R/W Centre Line or R/W Edge lights, must be attained and maintained."
Bearing in mind where the aircraft will be at 50' (above the threshold), then you really need the centreline lights to stand a chance of seeing the runway in time.
PP