RTN11
17th Apr 2015, 20:41
The approach ban states (extracted from the AIP):
4.9.1 The requirements for the commencement and continuation of an approach (approach ban) applicable to all CAT operations is given in CAT.OP.MPA.305
4.9.2 The approach ban requirements for public transport operations, aerial work and private operations are defined in Articles 107,
108 and 109 of the Air Navigation Order 2009. The ‘specified’ minima are detailed below and reflect EASA Ops.
4.9.3 An aircraft may commence an instrument approach regardless of the reported RVR/Visibility but the approach shall not be
continued below 1,000 ft above the aerodrome if the relevant RVR/Visibility for that runway is at the time less than the specified
minimum for landing.
4.9.4 If after passing 1,000 ft in accordance with paragraph 4.9.3, the reported RVR/Visibility falls below the applicable minimum, the approach may be continued to DA(H) or MDA(H)
4.9.5 The approach may be continued below DA/H or MDA/H and the landing may be completed provided that the required visual reference is established at the DA/H or MDA/H and is maintained.
4.9.6 The touchdown zone Runway Visual Range (RVR) shall always be controlling.
Just looking at 4.9.5, in the case where the reported RVR is below your minima, lets say 300m RVR in fog where you require 550m. If you are still above the 1000' cut off, but can clearly see through the fog and have all the require visual references from that point, are you in any way allowed to overrule the reported RVR and continue the approach, or is it a case of go around at 1000' if the RVR is still reported below your minma?
4.9.1 The requirements for the commencement and continuation of an approach (approach ban) applicable to all CAT operations is given in CAT.OP.MPA.305
4.9.2 The approach ban requirements for public transport operations, aerial work and private operations are defined in Articles 107,
108 and 109 of the Air Navigation Order 2009. The ‘specified’ minima are detailed below and reflect EASA Ops.
4.9.3 An aircraft may commence an instrument approach regardless of the reported RVR/Visibility but the approach shall not be
continued below 1,000 ft above the aerodrome if the relevant RVR/Visibility for that runway is at the time less than the specified
minimum for landing.
4.9.4 If after passing 1,000 ft in accordance with paragraph 4.9.3, the reported RVR/Visibility falls below the applicable minimum, the approach may be continued to DA(H) or MDA(H)
4.9.5 The approach may be continued below DA/H or MDA/H and the landing may be completed provided that the required visual reference is established at the DA/H or MDA/H and is maintained.
4.9.6 The touchdown zone Runway Visual Range (RVR) shall always be controlling.
Just looking at 4.9.5, in the case where the reported RVR is below your minima, lets say 300m RVR in fog where you require 550m. If you are still above the 1000' cut off, but can clearly see through the fog and have all the require visual references from that point, are you in any way allowed to overrule the reported RVR and continue the approach, or is it a case of go around at 1000' if the RVR is still reported below your minma?