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Air carrier large transport answers clearance for another air carrier with same call sign and incurs altitude excursion.
| Attributes | |
| ACN | 94267 |
| Time | |
| Date | 198809 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : okm |
| State Reference | OK |
| Altitude | msl bound lower : 39600 msl bound upper : 41000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute airway : zfw |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 15000 flight time type : 1000 |
| ASRS Report | 94267 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Acknowledged an ATC clearance to 'descend to FL240.' copilot read back the clearance and I began the descent. As we descended thru 39600' (from FL410) the controller questioned our altitude. We said we were at 39600 descending to FL240. The controller said the clearance was for air carrier ab flight xyz. We were air carrier circuit breaker flight xyz. The controllers must listen better!
Original NASA ASRS Text
Title: ACR LGT ANSWERS CLRNC FOR ANOTHER ACR WITH SAME CALL SIGN AND INCURS ALT EXCURSION.
Narrative: ACKNOWLEDGED AN ATC CLRNC TO 'DSND TO FL240.' COPLT READ BACK THE CLRNC AND I BEGAN THE DSCNT. AS WE DSNDED THRU 39600' (FROM FL410) THE CTLR QUESTIONED OUR ALT. WE SAID WE WERE AT 39600 DSNDING TO FL240. THE CTLR SAID THE CLRNC WAS FOR ACR AB FLT XYZ. WE WERE ACR CB FLT XYZ. THE CTLRS MUST LISTEN BETTER!
Data retrieved from NASA's ASRS site as of August 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.