A321
Flight Crew Air Transport Pilot (ATP)
Distraction; Situational Awareness; Workload
Aircraft Equipment Problem Less Severe; Deviation - Altitude Crossing Restriction Not Met; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Issued Advisory / Alert; Flight Crew Became Reoriented
Aircraft; Human Factors
Cleared via the arrival into ZZZ. Because we were filed at FL240 the Airbus being what it is dropped the constraints at FL240 and above. I did make note of this at ZZZZZ Intersection - the speed was there but not the +240. When the ride deteriorated I started down early forgetting about the dropped constraint. Controller gave us a number to Center and I called and explained what happened and why.Got the arrival review done and forgot about the dropped constraint.Have Airbus fix this problem since it has been happening since we started the RNAV arrivals.
[Report narrative contained no additional information.]
A321 flight crew reported failure to comply with a charted altitude restriction on arrival; citing the Airbus' FMC design as contributing to the incident.