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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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The flight crew received what they thought was a clearance to descend to 3000 ft. The crew read back the clearance to descend to 3000 ft. The controller seemed to infer as the crew was leveling at 3000 ft that he meant for the crew to level at 4000 ft. The crew was worried that they may have done wrong even though the controller said it was ok.
| Attributes | |
| ACN | 329410 |
| Time | |
| Date | 199602 |
| Day | Tue |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 3000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 150 flight time total : 20000 flight time type : 1000 |
| ASRS Report | 329410 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : overshoot other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
We were in a descent to 3000 ft. Passing through 4000 ft approach control called and asked if we were going to level at 4000 ft. We responded that we read back 3000 ft as a descent clearance. The controller replied 'no problem, descend to 3000 ft.' I began to wonder if perhaps we had made a mistake since other aircraft in the area were at 4000 ft. We had been on duty since XA50 PST and were tired. This happened at XG55 body time.
Original NASA ASRS Text
Title: THE FLC RECEIVED WHAT THEY THOUGHT WAS A CLRNC TO DSND TO 3000 FT. THE CREW READ BACK THE CLRNC TO DSND TO 3000 FT. THE CTLR SEEMED TO INFER AS THE CREW WAS LEVELING AT 3000 FT THAT HE MEANT FOR THE CREW TO LEVEL AT 4000 FT. THE CREW WAS WORRIED THAT THEY MAY HAVE DONE WRONG EVEN THOUGH THE CTLR SAID IT WAS OK.
Narrative: WE WERE IN A DSCNT TO 3000 FT. PASSING THROUGH 4000 FT APCH CTL CALLED AND ASKED IF WE WERE GOING TO LEVEL AT 4000 FT. WE RESPONDED THAT WE READ BACK 3000 FT AS A DSCNT CLRNC. THE CTLR REPLIED 'NO PROB, DSND TO 3000 FT.' I BEGAN TO WONDER IF PERHAPS WE HAD MADE A MISTAKE SINCE OTHER ACFT IN THE AREA WERE AT 4000 FT. WE HAD BEEN ON DUTY SINCE XA50 PST AND WERE TIRED. THIS HAPPENED AT XG55 BODY TIME.
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.