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Two ZDC controllers describe a recurring problem they are having with airbus aircraft not meeting the crossing restriction at mayos on the IVANE5 arrival to clt.
| Attributes | |
| ACN | 1234225 |
| Time | |
| Date | 201501 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZDC.ARTCC |
| State Reference | VA |
| Aircraft 1 | |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Route In Use | STAR IVANE5 |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 4 |
| Person 2 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 3 |
| Events | |
| Anomaly | ATC Issue All Types Aircraft Equipment Problem Less Severe Deviation - Altitude Overshoot Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Published Material / Policy |
Narrative:
The A319 was in level flight at FL240. I issued the descend via clearance. The first altitude restriction for the IVANE5 arrival into clt is at mstrd. That window is at or above (aoa) FL270. The next window is at mayos with an altitude window at or below (aob) FL260/ aoa FL240. After I issued the descend via clearance I noticed the aircraft was at FL236. Gve sectors altitude stratum at that location is FL240-FL330. I performed a point out to the sbv sector underlying my sector. I asked the pilot to verify his assigned altitude. Pilot replied with hesitation 'FL240'. Fortunately the sbv controller had already taken action and descended his traffic. Sbv controller anticipated the A319's premature descent since we have been briefed that this is a problem with the airbus FMS. The aircraft continued to descend to FL232 before climbing back to his assigned altitude of FL240. All of this occurred prior to the mstrd intersection. Either they need to fix their FMS systems to correctly comply with the restrictions on the arrival or we need to suspend the descend via into clt until this is fixed. This is very unsafe!!
Original NASA ASRS Text
Title: Two ZDC controllers describe a recurring problem they are having with Airbus aircraft not meeting the crossing restriction at MAYOS on the IVANE5 arrival to CLT.
Narrative: The A319 was in level flight at FL240. I issued the descend via clearance. The first altitude restriction for the IVANE5 arrival into CLT is at MSTRD. That window is at or above (AOA) FL270. The next window is at MAYOS with an altitude window at or below (AOB) FL260/ AOA FL240. After I issued the descend via clearance I noticed the aircraft was at FL236. GVE sectors altitude stratum at that location is FL240-FL330. I performed a point out to the SBV sector underlying my sector. I asked the pilot to verify his assigned altitude. Pilot replied with hesitation 'FL240'. Fortunately the SBV controller had already taken action and descended his traffic. SBV Controller anticipated the A319's premature descent since we have been briefed that this is a problem with the airbus FMS. The aircraft continued to descend to FL232 before climbing back to his assigned altitude of FL240. All of this occurred prior to the MSTRD intersection. Either they need to fix their FMS systems to correctly comply with the restrictions on the arrival or we need to suspend the descend via into CLT until this is fixed. This is very unsafe!!
Data retrieved from NASA's ASRS site 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.