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Jetman67

737 NGX True Air Temperature way off

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flying from ybcg to yssy with radar contact and ase real weather cruising at FL300 ASE indicated (-40 celcius i assume) but the TAT on the NGX was only -15 celcius i assume, anybody else had this issue in the NGX with ASE, I have also logged at HIFISIM forum but dont know if its ASE or the NGX thanks


Wayne such

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It's (the REAL outside air temp... is on the 2nd page of the PROG page along with the TAS readout and other stuff like ISA temp deviations etc..) The temp on the engine gauge region is what the airplane senses with speed, compression etc... but not the real ambient air temp... that would be way colder always... the normal temp outiside at FL400 is nearly 80F below zero!!


Peter James / Former Lead Designer Flight Unlimited III / ATP Beechjet 400A Captain

7000+ hours total flying time / Sager NP9280 notebook / i7 950 3.07 / 6 Gig / GTX280M

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