All weather operation table 6-1
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Join Date: Feb 2010
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All weather operation table 6-1
Hi, there
Let me ask you something.
According to ICAO doc 9365 Table 6-1 take-off minima
Facilities
RVR/VIS
Runway edge lights, runway centre line lights, centre line markings,RVR/VIS
and TDZ, MID and stop-end RVR
175m
Runway edge lights and either centre line lights or centre line markings500m
"Runway edge lights and either centre line lights or centre line markings = 500m"
Is 500m RVR or VIS? If 500m is RVR, is it TDZ RVR?
and second question is.....
I'll give you 3 scenarios.
our airport has full facilities with 3 RVRs. and take-off minima is 150m
TDZ MID Roll-out
1) 500, 150, 100
2) 500, 100, 100
3) 150, 100, 100 but VIS is observed 500m
Does local air traffic controller issue take-off clearence above each occasion?
and could you give me a related basis or regulation?
I'm confused these days. please help me....
Join Date: Oct 2009
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Hi seoulapp,
1) If your performance is such that your accelerate to V1 and stop distance is 2/3 rds of the the runway length available (so you can show you will be below 60 kts by the last 1/3 rd) - then you can ignore the stop end RVR. So you can take off under 500 150 100
2) Mid point RVR is below limits - so you can't take off.
3) You can only assess the take off visibility for the first part. The mid point is beyond 500m so you can't judge the visibility there - you have to accept the RVR value - so you can't take off.
ATC don't know your limits - so provided the RVR is equal to or above the minimum RVR published for the airport, they can offer clearance.
1) If your performance is such that your accelerate to V1 and stop distance is 2/3 rds of the the runway length available (so you can show you will be below 60 kts by the last 1/3 rd) - then you can ignore the stop end RVR. So you can take off under 500 150 100
2) Mid point RVR is below limits - so you can't take off.
3) You can only assess the take off visibility for the first part. The mid point is beyond 500m so you can't judge the visibility there - you have to accept the RVR value - so you can't take off.
ATC don't know your limits - so provided the RVR is equal to or above the minimum RVR published for the airport, they can offer clearance.
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ATC will always clear you for TO or LD. if you're past night curfew or doing a NDB in VV// conditions - not their problem - but YOURS.
unless the airport is closed due to snow, crash or whatever.
unless the airport is closed due to snow, crash or whatever.
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RRR
I believe the 60kts in your point 1 only applies to the landing case. At least it is only specifically stated as such in EU ops. "Relevant" for the take off case is not defined and so I would consider the requirement to mean the accelerate stop distance for the take off conditions should be less than 2/3 of the TORA. I say TORA as I'm not sure if stopway is included in the positioning of the detectors used for RVR assessment.
I believe the 60kts in your point 1 only applies to the landing case. At least it is only specifically stated as such in EU ops. "Relevant" for the take off case is not defined and so I would consider the requirement to mean the accelerate stop distance for the take off conditions should be less than 2/3 of the TORA. I say TORA as I'm not sure if stopway is included in the positioning of the detectors used for RVR assessment.
