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A321 captain and los angeles center controller reported that the airbus did not comply with a crossing restriction.
| Attributes | |
| ACN | 1441934 |
| Time | |
| Date | 201704 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZLA.ARTCC |
| State Reference | CA |
| Aircraft 1 | |
| Make Model Name | A321 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR HLYWD1 |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 8.5 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Clearance |
Narrative:
Flying the HLYWD1 arrival into lax; la center cleared us to descend via. The first officer; pilot flying set 12;000 in the altitude window and managed the descent. The aircraft started down at 1;000 FPM. At the top of the hour I; the pilot monitoring; went off to get the new ATIS and load new info into the performance page. ATC called us and told us to climb and maintain FL240 till bruen. I looked up and we were at 23;300 about 15 miles short of bruen. We had checked all the crossing restrictions; they were all correct. The aircraft was descending in managed mode. I don't know why it descended below 240. I copied a phone number and called la center at the gate. He advised me that there was no loss of separation.pilot flying and pilot monitoring did not do a good enough job monitoring the aircraft's descent.do not rely on the aircraft to always make crossing restrictions. Both pilots have to monitor all the time.
Original NASA ASRS Text
Title: A321 Captain and Los Angeles Center Controller reported that the Airbus did not comply with a crossing restriction.
Narrative: Flying the HLYWD1 arrival into LAX; LA Center cleared us to descend via. The First Officer; pilot flying set 12;000 in the altitude window and managed the descent. The aircraft started down at 1;000 FPM. At the top of the hour I; the pilot monitoring; went off to get the new ATIS and load new info into the performance page. ATC called us and told us to climb and maintain FL240 till BRUEN. I looked up and we were at 23;300 about 15 miles short of BRUEN. We had checked all the crossing restrictions; they were all correct. The aircraft was descending in managed mode. I don't know why it descended below 240. I copied a phone number and called LA Center at the gate. He advised me that there was no loss of separation.Pilot flying and pilot monitoring did not do a good enough job monitoring the aircraft's descent.Do not rely on the aircraft to always make crossing restrictions. Both pilots have to monitor all the time.
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.