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Old 25th Aug 2011, 00:19
  #3251 (permalink)  
Clandestino
 
Join Date: Feb 2005
Location: Correr es mi destino por no llevar papel
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Procedure that required setting 5°/CLB by heart was in force at the time of the accident. Page 59 of interim 3 report in English refers.

I see there's fear that it's unsafe and leads to zoom climbs ending in stalls.

It is not and it does not.

You will climb out of cruise condition but if your significant cockpit other fumbles with QRH for a half an hour, you will simply and gently level off at altitude where power required meets power available at 5° AoA. There's no aeroplane that can not sustain 5° AoA below Macrit, from Sopwith Camel, to Belanca Airbus, to CitationJet, to B747, to whatever and with thrust to weight ratios and of modern passenger jets, you will be far fom Macrit at 5° AoA. Do you understand that, for all practical purposes*, your AoA is difference between pitch and flightpath and in level flight AoA=pitch?

Does anyone have anything to add to this except his feelings and suspicions? Like arguments?

Granted, there's no need to go climbing but procedure is not about maintaining altitude. Speedwise, it gives you safe pitch and power for any weight, until actual settings are taken from the table. 5/CLB is just temporary measure and IMHO can be skipped if one knows his cruise power settings and attitudes for different weights by heart or if he was in stable cruise condition and just maintains last pitch and power. However, this would be overriding the prescribed emergency procedure and one must be better sure he knows what he is exactly doing.


*disregarding wing incidence and vertical air currents
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