Question from a Performance Engineering type -
Altitude is corrected for temp and this ensures obstacle clearance. Shouldn't you also correct FPA. If you don't you're going to end up long (high).
The actual FPA flown is a calculated by the FMS using barometic (Alt) and inertial data (for Vertical Speed). Even though you cross the FAF at the right altitude (once corrected for temp) the aircraft will then fly the final approach having calculated a required vertical speed from that corrected altitude but maintaining the FPA input from the approach plate.
In that situation - If you don't correct the FPA - you will end up (high).
To avoid being high - get the corrected the angle from the atan of the corrected hgt/distance to field.
FPA restrictions would be respected because the aircraft is still flying the required FPA. (It just thinks it flying a steeper FPA)
Given the decrements used to change altitude on the FCU (100 ft) and the relatively minor differences in corrected FPA's you could put together a single table of FPA corrections that would cover virtually every situation.
Yes? No?