PPRuNe Forums - View Single Post - TCAS/REAC W/S DET inoperative in case of RA 1+2 FAULT on A320
Old 26th May 2019, 05:04
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compressor stall
 
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Because the TCAS commands and sensitivity levels are different depending on how high you are off the ground, and below 2350' it uses one RADALT. Above that it's above MSL.

Similarly the PWS mode is active below 2300' radalt..
compressor stall is offline