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A C525 pilot flying solo was cleared to 3;000 ft but read back 2;000 ft; a TRACON low altitude alert sounded the controller recleared the pilot to 2;600 ft.
| Attributes | |
| ACN | 1135274 |
| Time | |
| Date | 201312 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | Citationjet (C525/C526) - CJ I / II / III / IV |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Descent |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 6 |
| Person 2 | |
| Function | Single Pilot Captain |
| Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 60 Flight Crew Total 18000 Flight Crew Type 860 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
Narrative:
The pilot checked on for ILS19. I descended aircraft to 3;000 ft. I thought I heard the pilot read back 3;000 ft but I misunderstood him. The low altitude alert went off when the aircraft was descending to 2100 ft. I immediately climbed him to 3;000 ft and issued a low altitude alert. The pilot said he had thought he was cleared to 2;000 ft but I had only cleared him to 3;000 ft. We listened to the tapes and had to slow them down to understand the pilot's readback. I will question all pilots when the readback is not clear and try to use 4;000 ft when possible to avoid this situation.
Original NASA ASRS Text
Title: A C525 pilot flying solo was cleared to 3;000 FT but read back 2;000 FT; a TRACON low altitude alert sounded the Controller recleared the pilot to 2;600 FT.
Narrative: The pilot checked on for ILS19. I descended aircraft to 3;000 FT. I thought I heard the pilot read back 3;000 FT but I misunderstood him. The low altitude alert went off when the aircraft was descending to 2100 FT. I immediately climbed him to 3;000 FT and issued a low altitude alert. The pilot said he had thought he was cleared to 2;000 FT but I had only cleared him to 3;000 FT. We listened to the tapes and had to slow them down to understand the pilot's readback. I will question all pilots when the readback is not clear and try to use 4;000 FT when possible to avoid this situation.
Data retrieved from NASA's ASRS site as of July 2013 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.