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Old 11th Sep 2013, 17:15
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OPEN DES
 
Join Date: Apr 2004
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Go around, thrust reduction altitude oei

Hi Ruddercat,
The LPC calculates only a singular OEI macg, presumably at a nominal TCH or 200ft I imagine. What will the macg be after 10min at toga? The LPC does not know about msa/missed approach alt, so it can only produce a singular macg. This is wrong in my opinion.
Pans ops (4 onwards) requires 2.5% macg (geometrically) until obstacle clearance is covered by other means (msa/chart note/missed app alt). A singular macg of 2.5% at apt elevation/tch (or whatever the ref is) does not meet this requirement and only expresses instantaneous macg, not the geometric profile able to achieve.
It's almost like if the airbus lpc is meant to calculate (albeit modifiable) g/a climb gradient as required by cs-25 only: 2.1% capability at G/A rather than the operational reqds of pans-ops!
Any thoughts?
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