Flight Crew Air Transport Pilot (ATP)
Human-Machine Interface; Distraction; Communication Breakdown; Situational Awareness; Workload; Time Pressure
ATC Issue All Types; Aircraft Equipment Problem Critical; Deviation - Altitude Crossing Restriction Not Met; Deviation - Speed All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance; General Work Refused
Aircraft; Procedure; Chart Or Publication
On the IVANE RNAV STAR; approaching MAYOS...FMS message [repeatedly advising] 'too steep path.' ATC repeatedly re-assigning speed. Aircraft was attempting to exceed depicted speeds in order to make altitudes. I did not feel safe. Using [my best] judgment and PIC discretion; I requested a different arrival.Why? The Airbus cannot reconcile [the complexities of] the IVANE [STAR]. The STAR is poor; no better than KELLS. Add in tailwinds and ATC continuously vectoring us off the arrival and continuously re-assigning speeds. We reduced speeds also because of turbulence. [Finally I] requested ATC re-clear us on the MAJIC STAR. ATC did so. Problem solved.Lots of task loading; turbulent conditions; argumentative ATC. And then later; as I was trying to get home afterwards; my Chief Pilot calling my standby/spare/children's cell phone and leaving me messages to call him on Sunday night when I am OFF! ALL of these things put me 'in the red.'
An A320 Captain expressed his disgust for the IVANE RNAV STAR into CLT advising its complexities exceeded the capabilities of his autoflight system; compelling it to exceed required airspeeds in order to attempt to comply with the associated altitude restrictions. Further difficulties were provided by the demands of ATC to comply with the published restrictions and/or to reassign airspeeds; vector or otherwise interfere with the flight crew's efforts to comply with the published constraints of the arrival. They ultimately refused the IVANE and requested and were assigned the MAJIC; a less complex; non RNAV STAR.