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Old 13th May 2023, 19:30
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JABBARA
 
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SamuelCV
JABBARA It absolutly make sence you comment. In 737 we have to fly LNAV/VNAV whitin temperature range withou any temperature correction, but if we are outsinde limmit we have to fly LNAV with correction to IAF ,IF,FAF and DA/MDA, holding , MSA. But I have a question regarding first par of martin2304 using FLS, when on RNP chart is depicted LPV, LNAV/VNAV, LNAV minimums which one you pick up?...As far as I remember in LNA/VNAV DA is constructed for minimum possible temperature in order to avoid obstacles so in this case applying correstion is not necessary. On the other hand in charts there are notes that for high temperatures GP may much more higher co
Just brief replies
  • All answers are available to your questions in DOC 8168 Volume I Flight Procedures(PAN-OPS), at the moment I can not give you reference page by page, but if you cannot find yourself I can do it later
  • FLS is not an approach procedure but is a technique trademarked by Airbus
  • PAN-OPS says regardless your technique you have to apply Cold Temperature corrections (this is intuitively logical as well as I tried to explain in my previous post)
  • PAN-OPS says
    For aircraft with approved automated cold temperature compensation FMS systems, the promulgated
    minimum temperature can be disregarded provided the actual temperature is within the limits of the aircraft
    certification.
    this is an answer to my ambiguous words in my previous post to martin2304' s question; I mean yes you can ignore cold temperature limit on chart if you fly FLS provided minimums are corrected for cold temperature (this is also intuitively logical as well as I tried to explain in my previous post)
  • LNAV/VNAV min is a Baro-VNAV kind approach minimum, Whereas LPV isbanyo giderini sökmek completely different and it is not a Baro-VNAV approach and approach path is not effected from temperature (similar to ILS) but still needs barometric correction at minimums . To be able to use LPV minimum, GNSS on board, should have SBAS (Satellite Based Augmentation System) capability. By SBAS, approach path is calculated and flown as 3D GNSS position, so no need barometric path

Last edited by JABBARA; 15th May 2023 at 19:11. Reason: "precious" is edited as "previous"
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