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The flight crew of a LR35 descended below the ATC cleared altitude due to a communication breakdown during issuance and read back.
| Attributes | |
| ACN | 1311768 |
| Time | |
| Date | 201511 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.TRACON |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Descent |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 50 Flight Crew Total 25000 Flight Crew Type 8000 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Altitude Overshoot Deviation - Procedural Clearance |
Narrative:
Approach control issued a descent and heading. We read back 2;000 and continued. Shortly thereafter we were switched to another controller and we replied with the heading and 2;000 feet again. Sometime later as we descended we were asked what our altitude was and we replied 2;600. We were told to climb to 3;000 which we did. Then were told that they usually issued 4;000 in our position. Weather was clear and although I thought the altitude was a little low we had the field in site from more than 20 miles out.a conversation with ATC revealed they had only issued 6;000 feet. And they twice failed to catch it on read back. I would hope that ATC would catch a questionable read back and a lower altitude than normal much quicker.
Original NASA ASRS Text
Title: The flight crew of a LR35 descended below the ATC cleared altitude due to a communication breakdown during issuance and read back.
Narrative: Approach Control issued a descent and heading. We read back 2;000 and continued. Shortly thereafter we were switched to another controller and we replied with the heading and 2;000 feet again. Sometime later as we descended we were asked what our altitude was and we replied 2;600. We were told to climb to 3;000 which we did. Then were told that they usually issued 4;000 in our position. Weather was clear and although I thought the altitude was a little low we had the field in site from more than 20 miles out.A conversation with ATC revealed they had only issued 6;000 feet. and they twice failed to catch it on read back. I would hope that ATC would catch a questionable read back and a lower altitude than normal much quicker.
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.