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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Medium large transport flight crew is given an altitude assignment and upon reaching the altitude is changed to 1000 ft lower. Possible traffic already assigned to first altitude.
| Attributes | |
| ACN | 373490 |
| Time | |
| Date | 199707 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : gmn |
| State Reference | CA |
| Altitude | msl bound lower : 21000 msl bound upper : 22000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : private |
| Experience | flight time last 90 days : 270 flight time total : 8400 flight time type : 4700 |
| ASRS Report | 373490 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 19000 flight time type : 16000 |
| ASRS Report | 373631 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Controller cleared us to FL220, then said descend to FL210. Believe the controller had traffic already assigned to FL220. We descended immediately to FL210, no conflict.
Original NASA ASRS Text
Title: MLG FLC IS GIVEN AN ALT ASSIGNMENT AND UPON REACHING THE ALT IS CHANGED TO 1000 FT LOWER. POSSIBLE TFC ALREADY ASSIGNED TO FIRST ALT.
Narrative: CTLR CLRED US TO FL220, THEN SAID DSND TO FL210. BELIEVE THE CTLR HAD TFC ALREADY ASSIGNED TO FL220. WE DSNDED IMMEDIATELY TO FL210, NO CONFLICT.
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.