From an Airbus FCOM: Pre take off and landing
"
TCAS () Mode selector TA or TA/RA
The FAA recommends selecting TA mode :
In case of known nearby traffic, which is in visual contact.
At particular airports, and during particular procedures, identified by an Operator as having a significant potential for unwanted or inappropriate resolution advisories (closely-spaced parallel runways, converging runways...). "
another one
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ADVISORY INHIBITION
Some advisories are inhibited, depending on the aircraft altitude :
All intruders flying below 380 feet AGL, when the own aircraft altitude is below 1700 feet AGL.
All RA aural messages below 1100 feet AGL in climb, and 900 feet AGL in descent. In this case, the RAs are converted into TAs.
"Descend" type advisory below 1200 feet AGL in climb, or 1000 feet AGL in descent.
"Increase Descent" RA below 1650 feet AGL in climb, or 1450 feet AGL in descent
.
All aural messages below 600 feet AGL in climb and below 400 feet AGL in descent
...eish lotsa "stuff".
So when landing/taking off IMC in Cpt, the poppa charlies and angry palm tree`s won`t be a hassle when the field is IMC as only one might be sculling around special VFR.
If VMC there might be a few but why get "distracted" when VMC? If you shoot ILS`s head down VMC...thats your choice..
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