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An air carrier widebody transport took another aircraft's ATC instructions. There were similar call signs.
| Attributes | |
| ACN | 248687 |
| Time | |
| Date | 199308 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : atl |
| State Reference | GA |
| Altitude | msl bound lower : 5000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent : approach descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 180 flight time total : 15000 |
| ASRS Report | 248687 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : required legal separation other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | vertical : 600 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Passenger became ill at about 12000 ft. I tried to call for emt's but had trouble with company radio. In meantime, we descended to 6000 ft, heading 180 degrees. We were flight xyz with flight xyz plus 10 also on frequency. First officer was flying and also talking to ATC while I tried to use other radio. He took a call for xyz plus 10 and started descent to 5000 ft and heading 250 degrees which put us in conflict with other traffic at 5000 ft. Controller gave immediate corrective turn and climb. Also got TCASII RA.
Original NASA ASRS Text
Title: AN ACR WDB TOOK ANOTHER ACFT'S ATC INSTRUCTIONS. THERE WERE SIMILAR CALL SIGNS.
Narrative: PAX BECAME ILL AT ABOUT 12000 FT. I TRIED TO CALL FOR EMT'S BUT HAD TROUBLE WITH COMPANY RADIO. IN MEANTIME, WE DSNDED TO 6000 FT, HDG 180 DEGS. WE WERE FLT XYZ WITH FLT XYZ PLUS 10 ALSO ON FREQ. FO WAS FLYING AND ALSO TALKING TO ATC WHILE I TRIED TO USE OTHER RADIO. HE TOOK A CALL FOR XYZ PLUS 10 AND STARTED DSCNT TO 5000 FT AND HDG 250 DEGS WHICH PUT US IN CONFLICT WITH OTHER TFC AT 5000 FT. CTLR GAVE IMMEDIATE CORRECTIVE TURN AND CLB. ALSO GOT TCASII RA.
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.