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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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The controller said the reporter was not cleared to climb but another aircraft with a similar call sign was. The reporter and his first officer both heard the climb instructions were for them. The pilot with the similar call sign said he had not bee given the climb instructions. The controller said the wrong call sign.
| Attributes | |
| ACN | 334890 |
| Time | |
| Date | 199604 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 4000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| 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 : 8000 flight time type : 3000 |
| ASRS Report | 334890 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
We were air carrier flight xyz. We departed dfw and regional departure assigned us 4000 ft. We were unaware that air carrier flight xxz was also on the frequency. We were told to climb to 17000 ft. Out of 5000 ft approach told us that we had left our assigned altitude of 4000 ft and that xxz was given the clearance to 17000 ft. My first officer and I both heard air carrier xyz cleared to 17000 ft and I read it back. Someone on air carrier xxz came on the frequency and said that they had never been cleared to climb. Similar sounding call signs strike again! I don't think any loss of separation occurred.
Original NASA ASRS Text
Title: THE CTLR SAID THE RPTR WAS NOT CLRED TO CLB BUT ANOTHER ACFT WITH A SIMILAR CALL SIGN WAS. THE RPTR AND HIS FO BOTH HEARD THE CLB INSTRUCTIONS WERE FOR THEM. THE PLT WITH THE SIMILAR CALL SIGN SAID HE HAD NOT BEE GIVEN THE CLB INSTRUCTIONS. THE CTLR SAID THE WRONG CALL SIGN.
Narrative: WE WERE ACR FLT XYZ. WE DEPARTED DFW AND REGIONAL DEP ASSIGNED US 4000 FT. WE WERE UNAWARE THAT ACR FLT XXZ WAS ALSO ON THE FREQ. WE WERE TOLD TO CLB TO 17000 FT. OUT OF 5000 FT APCH TOLD US THAT WE HAD LEFT OUR ASSIGNED ALT OF 4000 FT AND THAT XXZ WAS GIVEN THE CLRNC TO 17000 FT. MY FO AND I BOTH HEARD ACR XYZ CLRED TO 17000 FT AND I READ IT BACK. SOMEONE ON ACR XXZ CAME ON THE FREQ AND SAID THAT THEY HAD NEVER BEEN CLRED TO CLB. SIMILAR SOUNDING CALL SIGNS STRIKE AGAIN! I DON'T THINK ANY LOSS OF SEPARATION OCCURRED.
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.