dlrk Posted January 9, 2022 Report Share Posted January 9, 2022 Intermittently during flight in icing conditions, even with the probe heat on, a STALL FAIL warning comes up. It goes away after a minute or so. Quote Link to comment Share on other sites More sharing options...
Graeme_77 Posted January 10, 2022 Report Share Posted January 10, 2022 Thanks. Will need to be checked. Can you provide a rough idea of the weather conditions when the STALL FAIL message was seen? Quote Link to comment Share on other sites More sharing options...
dlrk Posted January 10, 2022 Author Report Share Posted January 10, 2022 It was below -10C in clouds Quote Link to comment Share on other sites More sharing options...
sho69607 Posted January 15, 2022 Report Share Posted January 15, 2022 I can report this issue shortly after takeoff and approaching cruise altitude (no clouds). Quote Link to comment Share on other sites More sharing options...
JRBarrett Posted January 16, 2022 Report Share Posted January 16, 2022 (edited) I don’t know how thoroughly the failure conditions for the stall warning system are emulated in the sim, but in the real aircraft, the airspeeds reported by the number 1 and 2 ADCs and the standby instrument must all match. On the CRJ, they must all be within 2 knots of each other - I assume the tolerances on the 650 are similar. Also the left and right AOA vanes must match within 1 degree. If the problem occurs in icing conditions there could be an airspeed or AOA disparity. Check the airspeeds on the left and right PFD and the standby instrument, as well as the AOA on the two PFDs Edited January 16, 2022 by JRBarrett 1 Quote Link to comment Share on other sites More sharing options...
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