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A B737 flight crew accepted a clearance for another aircraft resulting in an excursion from assigned altitude.
| Attributes | |
| ACN | 520710 |
| Time | |
| Date | 200107 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : hou.airport |
| State Reference | TX |
| Altitude | msl single value : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 17000 flight time type : 10000 |
| ASRS Report | 520710 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Resolutory Action | controller : issued advisory flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
We were level at FL310 when ZHU called us 'air carrier X, climb and maintain FL350, contact ZHU on frequency 1XX.xx.' we changed frequency, started climb. New controller said 'go back to the old frequency, this frequency in error.' we returned to the old frequency and reported in and were told the clearance was for another similar call sign. No deviation was required or TCASII alert.
Original NASA ASRS Text
Title: A B737 FLT CREW ACCEPTED A CLRNC FOR ANOTHER ACFT RESULTING IN AN EXCURSION FROM ASSIGNED ALT.
Narrative: WE WERE LEVEL AT FL310 WHEN ZHU CALLED US 'ACR X, CLB AND MAINTAIN FL350, CONTACT ZHU ON FREQ 1XX.XX.' WE CHANGED FREQ, STARTED CLB. NEW CTLR SAID 'GO BACK TO THE OLD FREQ, THIS FREQ IN ERROR.' WE RETURNED TO THE OLD FREQ AND RPTED IN AND WERE TOLD THE CLRNC WAS FOR ANOTHER SIMILAR CALL SIGN. NO DEV WAS REQUIRED OR TCASII ALERT.
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.