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An A321 captain expressed his displeasure with the demands of the ivane RNAV STAR to clt; citing the inability of the autoflight system to comply with crossing restrictions in managed descent mode.
| Attributes | |
| ACN | 1115409 |
| Time | |
| Date | 201309 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZTL.ARTCC |
| State Reference | GA |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | A321 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Other unwanted situation |
Narrative:
The ivane two RNAV arrival is an accident waiting to happen. The A321 cannot make the restrictions and results in excessive workload and task saturation.the airbus 321; using the auto flight system in managed mode; cannot make the restrictions on the ivane two RNAV arrival! Example: amobe to peloy is 5.3 mi. The A321 cannot descend 1000 ft and slow from 250 to 210 KTS in 5.3 mi!!! It can't be done in managed mode; especially if there is a tailwind. The only way to comply with this restriction is to come out of managed speed; select a slower speed approaching amobe and then use full speedbrakes and extend flaps to make the restiction at peloy. This is a poorly designed STAR -- no wonder there are so many problems with it.get rid of it.
Original NASA ASRS Text
Title: An A321 Captain expressed his displeasure with the demands of the IVANE RNAV STAR to CLT; citing the inability of the autoflight system to comply with crossing restrictions in Managed Descent mode.
Narrative: The IVANE TWO RNAV ARRIVAL is an accident waiting to happen. The A321 CANNOT MAKE THE RESTRICTIONS and results in excessive workload and task saturation.The Airbus 321; using the auto flight system in Managed Mode; CANNOT MAKE THE RESTRICTIONS ON THE IVANE TWO RNAV ARRIVAL! Example: AMOBE to PELOY is 5.3 mi. The A321 CANNOT descend 1000 FT and slow from 250 to 210 KTS in 5.3 mi!!! IT CAN'T BE DONE in Managed mode; especially if there is a tailwind. The only way to comply with this restriction is to come out of managed speed; select a slower speed approaching AMOBE and then use FULL SPEEDBRAKES and extend flaps to make the restiction at PELOY. This is a poorly designed STAR -- no wonder there are so many problems with it.Get rid of it.
Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.