tcasblue and Vilas - it appears his mistake is to assume that the aircraft gemoetrically descends at the increased FPA. He analysed the AC624 crash here
https://code7700.com/altimetry_tempe...ection.htm#fpa
Half way down he states that the aircraft descends geometrically at the increased FPA from the
uncorrected altitude, ending up low.
In any case, TC states that the aircraft ended up low due to momentary windshears and does not correct (which it won't). The crew then did not monitor the profile as per the FCOM. The requirement to refine the FPA during the descent has nothing to do with the cold (assuming a uniform temperature gradient and level ground under the approach)
