Aerodrome Operating Minima vs Absolute minima

[TATC]

Hi, was just wondering if anyone could help me.

I am having trouble finding out what the differnece is between Aerodrome operating minima and absolute minima for different types of approches

thanks for you help

[2Donkeys]

This was done to death not long ago.

As a pilot, you only care about the Aerodrome operating minima, which are a function of your licence, the ground radio/lighting equipment, the approach design, the time of day, and any failures that might be relevant

Information for you to work your minima out will be published in the national AIP - and should be read in conjunction with your own licence limitations and any other national restrictions you operate under (FAA, DGAC or other).

Adopting this approach, different pilots in different aircraft on different occasions will all have slightly different minima that they must apply for the same approach. But this is fine.

If you are an ATCO, you will have a documented set of "absolute minima" for each of the approaches you look after. These minima are also determined based on the systems minima for the approach, local restrictions and the law of the land.

Providing he does his maths right, it will not be possible for a pilot's minima to be below the absolute minima. Therefore, Absolute Minima may be used exclusively by ATC to determine whether or not an approach is likely to be in compliance with the law. They exist because ATC cannot otherwise be expected to know the various constraints that each arriving aircraft and crew is operating under.

[TATC]

Thanks for the help

If i'm reading it right - Aerodrome aperating minima is the worse conditions the Aerodrome normally permit a certain approach to be made, and Absolute miniam are the minumum conditions that the Law (ANO) stipulates for a certain type of approach

Thanks again:D

[2Donkeys]

Not quite

The Aerodrome Operating Minima are in effect little more than a set of guidelines to be read by a pilot in conjunction with this limitiations of his licence. As a result, he will construct his own minima for the approach which he must not bust.

By contrast, the absolute minima are calculated for/by the airport, and represent the lowest possible defensible minima to which their specific approach(es) should be flown.

If the met conditions are below absolute minima, it is inconceivable that any pilot can make a Cat 1 approach and land, regardless of his own calculated minima.

2D