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Air carrier flight crew reported being cleared to a lower than published altitude over high terrain which led to a low altitude alert.
| Attributes | |
| ACN | 1502150 |
| Time | |
| Date | 201712 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | SCT.TRACON |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Widebody Transport |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 75 Flight Crew Total 8000 Flight Crew Type 2325 |
| Person 2 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 61 Flight Crew Total 9900 Flight Crew Type 1950 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
Narrative:
We were flying the JANNY3 into kbur and due to gusty winds and a slight change of direction to our benefit; we elected to switch approaches from the ILS 8 to RNAV visual 33. Socal cleared us direct to gzila. We were cleared to 4000 ft and cleared for the approach. Around 4500 ft; ATC called and told us to climb to 5000 ft and that we set off an alert. We immediately climbed and leveled off at 5000 ft. With the change of approaches; we were very busy and failed to monitor and/or query the controller on our clearance. Gzila had a crossing restriction of 6000 ft and we should of had better situational awareness. Whether the mistake was due to ATC or us; we should have caught it with the terrain in the area.
Original NASA ASRS Text
Title: Air Carrier flight crew reported being cleared to a lower than published altitude over high terrain which led to a low altitude alert.
Narrative: We were flying the JANNY3 into KBUR and due to gusty winds and a slight change of direction to our benefit; we elected to switch approaches from the ILS 8 to RNAV visual 33. SoCal cleared us direct to GZILA. We were cleared to 4000 ft and cleared for the approach. Around 4500 ft; ATC called and told us to climb to 5000 ft and that we set off an alert. We immediately climbed and leveled off at 5000 ft. With the change of approaches; we were very busy and failed to monitor and/or query the controller on our clearance. GZILA had a crossing restriction of 6000 ft and we should of had better situational awareness. Whether the mistake was due to ATC or us; we should have caught it with the terrain in the area.
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.