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Altitude deviation. Excursion from assigned when reporter flight crew acknowledged descent clearance which was intended for another aircraft. ARTCC radar controller misheard readback identify, but when observing the wrong aircraft in a descent, intervened.
| Attributes | |
| ACN | 345570 |
| Time | |
| Date | 199608 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : buj |
| State Reference | TX |
| Altitude | msl bound lower : 34000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw |
| Operator | common carrier : air carrier |
| Make Model Name | DC-8 63 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : cfi pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 12000 flight time type : 3000 |
| ASRS Report | 345570 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 65 flight time total : 12000 flight time type : 300 |
| ASRS Report | 345567 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
We were told to expect lower. Soon after, all 3 crew members heard a descent clearance given to us. I acknowledged clearance from center from FL350 to FL330 upon descent. Through FL340, center advised us clearance was for another aircraft and we climbed back to FL350. Center also acknowledged no traffic in the immediate area and the matter was closed for them. Failure by center to listen to readback of clearance contributed to this altitude excursion.
Original NASA ASRS Text
Title: ALTDEV. EXCURSION FROM ASSIGNED WHEN RPTR FLC ACKNOWLEDGED DSCNT CLRNC WHICH WAS INTENDED FOR ANOTHER ACFT. ARTCC RADAR CTLR MISHEARD READBACK IDENT, BUT WHEN OBSERVING THE WRONG ACFT IN A DSCNT, INTERVENED.
Narrative: WE WERE TOLD TO EXPECT LOWER. SOON AFTER, ALL 3 CREW MEMBERS HEARD A DSCNT CLRNC GIVEN TO US. I ACKNOWLEDGED CLRNC FROM CTR FROM FL350 TO FL330 UPON DSCNT. THROUGH FL340, CTR ADVISED US CLRNC WAS FOR ANOTHER ACFT AND WE CLBED BACK TO FL350. CTR ALSO ACKNOWLEDGED NO TFC IN THE IMMEDIATE AREA AND THE MATTER WAS CLOSED FOR THEM. FAILURE BY CTR TO LISTEN TO READBACK OF CLRNC CONTRIBUTED TO THIS ALT EXCURSION.
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.