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ARTCC claims altitude assignment that was previously readback by the flight crew was not the actual assignment.
| Attributes | |
| ACN | 507410 |
| Time | |
| Date | 200104 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zma.artcc |
| State Reference | FL |
| Altitude | msl bound lower : 28000 msl bound upper : 29000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Medium Transport |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 15600 flight time type : 600 |
| ASRS Report | 507410 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : published procedure |
| Resolutory Action | controller : issued new clearance |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
Descending into ZMA, aircraft X was cleared from FL370 to FL270. I was flying the aircraft and listening to the ATIS. The first officer who was talking to ZMA acknowledged the clearance and set FL270 in the altitude select. Upon descending through FL280, ZMA called and said 'aircraft X, maintain FL270. You were assigned to maintain FL290.' we were then switched to another frequency. Both the first officer and I had thought we were cleared to FL270 but apparently we were only cleared to FL290.
Original NASA ASRS Text
Title: ARTCC CLAIMS ALT ASSIGNMENT THAT WAS PREVIOUSLY READBACK BY THE FLT CREW WAS NOT THE ACTUAL ASSIGNMENT.
Narrative: DSNDING INTO ZMA, ACFT X WAS CLRED FROM FL370 TO FL270. I WAS FLYING THE ACFT AND LISTENING TO THE ATIS. THE FO WHO WAS TALKING TO ZMA ACKNOWLEDGED THE CLRNC AND SET FL270 IN THE ALT SELECT. UPON DSNDING THROUGH FL280, ZMA CALLED AND SAID 'ACFT X, MAINTAIN FL270. YOU WERE ASSIGNED TO MAINTAIN FL290.' WE WERE THEN SWITCHED TO ANOTHER FREQ. BOTH THE FO AND I HAD THOUGHT WE WERE CLRED TO FL270 BUT APPARENTLY WE WERE ONLY CLRED TO FL290.
Data retrieved from NASA's ASRS site as of July 2007 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.