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Corporate jet first officer reported receiving a 'too low terrain' GPWS warning as well as a low altitude alert from ATC on approach to oak.
| Attributes | |
| ACN | 1292953 |
| Time | |
| Date | 201509 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | OAK.Airport |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Route In Use | Other RNAV Y RWY 28L |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
Narrative:
The clearance received was the emzoh one RNAV west transition. With approach we received the clearance for RNAV Y 28L approach; I briefed the approach. The arrival and initial portion of the approach was flown using LNAV/VNAV. The crossing altitudes were displayed in the FMS and the active altitude limitation [displayed] in magenta on the pfd. After crossing jupap fix above 3;700 MSL I elected to use vertical speed and increase my descent rate down to the next displayed altitude on the pfd 1;900 MSL at vodsy; I didn't realize that the intermediate fix was not loaded in the FMS thus not displayed on the pdf. I therefore crossed heder below the minimum on the approach plate; received a too low terrain warning and a warning from the controller to check my altitude.cross check all fixes and altitudes on the FMS against the approach; the fix heder should be displayed on the FMS.
Original NASA ASRS Text
Title: Corporate jet FO reported receiving a 'too low terrain' GPWS warning as well as a low altitude alert from ATC on approach to OAK.
Narrative: The clearance received was the EMZOH ONE RNAV WEST Transition. With approach we received the clearance for RNAV Y 28L approach; I briefed the approach. The arrival and initial portion of the approach was flown using LNAV/VNAV. The crossing altitudes were displayed in the FMS and the active altitude limitation [displayed] in magenta on the PFD. After crossing JUPAP fix above 3;700 MSL I elected to use vertical speed and increase my descent rate down to the next displayed altitude on the PFD 1;900 MSL at VODSY; I didn't realize that the intermediate fix was not loaded in the FMS thus not displayed on the PDF. I therefore crossed HEDER below the minimum on the approach plate; received a too low terrain warning and a warning from the controller to check my altitude.Cross check all fixes and altitudes on the FMS against the approach; the fix HEDER should be displayed on the FMS.
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.