Dear IPACS
Members,
First of all, I would like to thank the entire IPACS team for bringing such a magnificent aircraft as the Airbus A350 to the aviation world and for continuously improving its systems.
During my recent flight, I encountered an interesting operational situation and would like to share it here to get your insights and open it up for discussion.
During the climb, we reached our planned cruise altitude well before arriving at the Top of Cruise (TOC) point calculated in the FMS flight plan. In other words, the aircraft completed its climb and leveled off much earlier than the theoretical point predicted on the vertical profile.
What do you think is the primary reason behind this situation?
- Is it the effect of real-time wind/temperature variations (ISA deviation) on climb performance?
- An instantaneous optimization variance in the FMS vertical profile (VNAV) predictions?
- Or was the aircraft's actual gross weight and fuel flow parameters simply more efficient than planned?
I look forward to hearing the comments of captains and engineers who have experienced a similar vertical profile deviation on the A350, or who can explain the exact technical logic behind it.
Safe flights,