Originally Posted by
mmm345
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Yep I have seen that point in the AIP aswell. However that isnt really in the IFR alternate minima section 11.7.2.12, which details the alternate minima conditions for IFR flights.
In particiular, as this whole thread is abpoiut a non IAP destination, Clause C would apply, which states to refer to ENR 1.10, of which says the minimum forecast for a non IAP destination is a GAF.
Note Clause B above it directly refers to the quote about aerodrome forecast being unaviable or provisional , as you referred to earlier, however beings with , For aerodromes with an IAP , if it were to case for non IAP destinations, they wouldnt have said " For aerodromes with an IAP" and clause C would be redundant. Since both these clauses are under the heading " For IFR flights, the alternate minima are as follows", clearly this is the alternate minima for IFR flights !, evidently based on if there is a published IAl chart with an alternate minima to compare to a TAF or not.
The issue about LSALT + 500 is for no NAVAIDS. It should say "no cloud below LSALT plus 500 and 8km vis FROM THE TAF".
Ah no, it isnt, it is found in the Weather IFR alternate minima section 11.7.2.12.
Additionally, refer to the current NOTAM ive included above. They clearly offer an ammendment to Clause B of the IFR altenrate weather minima, stating that when an TAF is U/S at the destination, instead of requiring an alternate, you can apply the LSALT +5 etc rule, in reference to the only remaining forecast since there is no TAF, THE GAF. The GAF is much more conservative than a TAF, often a TAF would suggest you can complete the flight LSAlt+5, however the GAF completly limits this without an alternate, not the other way around.
Obviously if the GAF was marginal you would carry an alternate, but on a CAVOK clear day, ( as per the opening post), an alternate is unessecary.