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B737 flight crew experienced a misunderstanding with nct TRACON descending on the DYAMD2 to join the FMS bridge visual 28R. The crew is told to maintain 8;000 feet after archi then told to descend and maintain 7;000 feet prior to archi. Archi should have been crossed at 8;000 feet.
| Attributes | |
| ACN | 1304860 |
| Time | |
| Date | 201510 |
| Place | |
| Locale Reference | SFO.Airport |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Route In Use | STAR DYAMD2 |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 170 Flight Crew Type 772 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 174 Flight Crew Type 832 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
The clearance was descend via the dyamd arrival after archi fly FMS bridge via routing only. Descend via arrival except after archi maintain 8;000. ATC slowed us to 250; 230; and then 210. Descend maintain 8;000 then descend and maintain 7;000; which was before archi. We used level change. We had briefed the pilot bulletin for the change at archi and changed it in the FMC before descent. Next controller after we checked in descending from 8;000 to 7;000 told us in the future we should cross archi at 8;000. We politely told him that our previous clearance was descend and maintain 7;000 from the last controller.the routing is confusing with these 2 arrivals because they both have cedes but not frely; and cedes has 2 different restrictions.
Original NASA ASRS Text
Title: B737 flight crew experienced a misunderstanding with NCT TRACON descending on the DYAMD2 to join the FMS bridge visual 28R. The crew is told to maintain 8;000 feet after ARCHI then told to descend and maintain 7;000 feet prior to ARCHI. ARCHI should have been crossed at 8;000 feet.
Narrative: The clearance was descend via the DYAMD arrival after ARCHI fly FMS bridge via routing only. Descend via arrival except after ARCHI maintain 8;000. ATC slowed us to 250; 230; and then 210. Descend maintain 8;000 then descend and maintain 7;000; which was before ARCHI. We used level change. We had briefed the pilot bulletin for the change at ARCHI and changed it in the FMC before descent. Next controller after we checked in descending from 8;000 to 7;000 told us in the future we should cross ARCHI at 8;000. We politely told him that our previous clearance was descend and maintain 7;000 from the last controller.The routing is confusing with these 2 arrivals because they both have CEDES but not FRELY; and CEDES has 2 different restrictions.
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.