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Old 5th December 2008 | 07:57
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BOAC
Per Ardua ad Astraeus
 
Joined: Mar 2000
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From: UK
H8 - I agree with your figures: JAR (and now EU ops 1:405) say that.

To atttempt to answer Zuz's question (NB I HAVE ploughed through JAR/EU Ops but of course could have missed some sub-para!)

According to EU-OPS I understand that during a Cat 2/3 app the mid point and stop end RVR figures can never be lower than the published Take off minima.

I cannot see those words. In as much as the absolute minimum take-off RVR allowed is 75m and ditto the landing, I suppose semantically you are correct, although no reference I am aware of is ever made to 'Take-off' mins when determining landing mins.

On a Cat 1 app what governs the mid point and stop end figures?

Again, the book says:
"If reported and relevant, the mid point and stop end RVR are also controlling." with a note: "“Relevant”, in this context, means that part of the runway used during the high speed phase of the landing down to a speed of approximately 60 knots."

So, my interpretation is a 'normal' absolute minimum of 125m mid and 75m stopend - with the proviso that your operator may determine that stop (or even mid) are not 'relevant' - reduceable to 75m at each for certain a/c (IIIb).

and are these figures always the same?
No

Anyone else got a different interpretation?
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