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Aircraft descended below cleared altitude. Low altitude alert provided by ATC resulting in flight correcting to cleared altitude.
| Attributes | |
| ACN | 1317763 |
| Time | |
| Date | 201512 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.TRACON |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Heavy Transport |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Procedural Clearance Flight Deck / Cabin / Aircraft Event Other / Unknown Inflight Event / Encounter CFTT / CFIT |
Narrative:
On arrival we were cleared for the approach. As pm I read back 'turn right 200 degrees maintain 2;000 till established cleared for the ILS approach'. Just outside the initial approach fix; ATC informed us of a low altitude alert and were told to climb back up to 3;000 feet. Once there we were re-cleared for the ILS approach. No further incidents.I would say that fatigue was the primary culprit. When we read back the clearance it should have seemed an unusual altitude to intercept at; as the minimum altitude at the IAF is 2;600 feet. Also when I received the clearance there was chatter on guard 121.5 which could have interfered with hearing our clearance correctly.
Original NASA ASRS Text
Title: Aircraft descended below cleared altitude. Low altitude alert provided by ATC resulting in flight correcting to cleared altitude.
Narrative: On arrival we were cleared for the approach. As PM I read back 'turn right 200 degrees maintain 2;000 till established cleared for the ILS approach'. Just outside the initial approach fix; ATC informed us of a low altitude alert and were told to climb back up to 3;000 feet. Once there we were re-cleared for the ILS approach. No further incidents.I would say that fatigue was the primary culprit. When we read back the clearance it should have seemed an unusual altitude to intercept at; as the minimum altitude at the IAF is 2;600 feet. Also when I received the clearance there was chatter on guard 121.5 which could have interfered with hearing our clearance correctly.
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.