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Air carrier cleared to descend, read back. Second aircraft inquired who was clearance for? For inquiring aircraft. Altitude deviation.
| Attributes | |
| ACN | 190030 |
| Time | |
| Date | 199109 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : vuz |
| State Reference | AL |
| Altitude | msl bound lower : 32700 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute airway : j151 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 19000 flight time type : 13000 |
| ASRS Report | 190030 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flight was en route to stl from rsw and had descended from FL350 to FL330 due to turbulence and was standing by for further clearance to FL310. First officer was flying the aircraft and captain was handling the radio. A clearance to FL310 was received and acknowledged by the captain. The aircraft had started descent when another aircraft with a similar call sign asked memphis center who the clearance to FL310 had been for. Memphis replied that it had been for the inquiring aircraft and that my flight was to maintain FL330. By this time we had descended approximately 300 ft to FL327. We climbed back to FL330 and continued to stl uneventfully. I, and the other 2 crew members, all feel that we heard our call sign used when receiving the clearance to FL310. When we read back the clearance memphis center did not issue any clarification at that time.
Original NASA ASRS Text
Title: ACR CLRED TO DSND, READ BACK. SECOND ACFT INQUIRED WHO WAS CLRNC FOR? FOR INQUIRING ACFT. ALTDEV.
Narrative: FLT WAS ENRTE TO STL FROM RSW AND HAD DSNDED FROM FL350 TO FL330 DUE TO TURB AND WAS STANDING BY FOR FURTHER CLRNC TO FL310. FO WAS FLYING THE ACFT AND CAPT WAS HANDLING THE RADIO. A CLRNC TO FL310 WAS RECEIVED AND ACKNOWLEDGED BY THE CAPT. THE ACFT HAD STARTED DSCNT WHEN ANOTHER ACFT WITH A SIMILAR CALL SIGN ASKED MEMPHIS CENTER WHO THE CLRNC TO FL310 HAD BEEN FOR. MEMPHIS REPLIED THAT IT HAD BEEN FOR THE INQUIRING ACFT AND THAT MY FLT WAS TO MAINTAIN FL330. BY THIS TIME WE HAD DSNDED APPROX 300 FT TO FL327. WE CLBED BACK TO FL330 AND CONTINUED TO STL UNEVENTFULLY. I, AND THE OTHER 2 CREW MEMBERS, ALL FEEL THAT WE HEARD OUR CALL SIGN USED WHEN RECEIVING THE CLRNC TO FL310. WHEN WE READ BACK THE CLRNC MEMPHIS CENTER DID NOT ISSUE ANY CLARIFICATION AT THAT 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.