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First officer responded to a similar sounding call sign by flying a clearance issued to another aircraft. Captain heard call sign differently and corrected first officer mistake and clarified the clearance with ATC.
| Attributes | |
| ACN | 336135 |
| Time | |
| Date | 199605 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : atl |
| State Reference | GA |
| Altitude | msl bound lower : 2700 msl bound upper : 2700 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 153 flight time total : 5000 flight time type : 2500 |
| ASRS Report | 336135 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Problem arose as a result of similar call signs -- air carrier X abc and air carrier X aac, plus a long crew duty day. ATC cleared air carrier X abc to an ILS runway 8L, contact tower at the marker. Near the marker, air carrier X aac cleared approach to runway 9R. First officer heard air carrier X abc and maneuvered toward runway 9R, PNF heard air carrier X aac, so was busy with panel and he was not sure. By the time CRM procedures were put into effect we had leveled off at approximately 2700 ft MSL and were abeam runway 9L. An evasive maneuver was initiated by captain back toward runway 8L after our clearance was clarified. More needs to be done about similar call signs operating within the TCA. I have tried by the way, I say the callsign, ie, air carrier X (ab)-(C) instead of air carrier X (a)-(back course), but ATC does not respond in this manner.
Original NASA ASRS Text
Title: FO RESPONDED TO A SIMILAR SOUNDING CALL SIGN BY FLYING A CLRNC ISSUED TO ANOTHER ACFT. CAPT HEARD CALL SIGN DIFFERENTLY AND CORRECTED FO MISTAKE AND CLARIFIED THE CLRNC WITH ATC.
Narrative: PROB AROSE AS A RESULT OF SIMILAR CALL SIGNS -- ACR X ABC AND ACR X AAC, PLUS A LONG CREW DUTY DAY. ATC CLRED ACR X ABC TO AN ILS RWY 8L, CONTACT TWR AT THE MARKER. NEAR THE MARKER, ACR X AAC CLRED APCH TO RWY 9R. FO HEARD ACR X ABC AND MANEUVERED TOWARD RWY 9R, PNF HEARD ACR X AAC, SO WAS BUSY WITH PANEL AND HE WAS NOT SURE. BY THE TIME CRM PROCS WERE PUT INTO EFFECT WE HAD LEVELED OFF AT APPROX 2700 FT MSL AND WERE ABEAM RWY 9L. AN EVASIVE MANEUVER WAS INITIATED BY CAPT BACK TOWARD RWY 8L AFTER OUR CLRNC WAS CLARIFIED. MORE NEEDS TO BE DONE ABOUT SIMILAR CALL SIGNS OPERATING WITHIN THE TCA. I HAVE TRIED BY THE WAY, I SAY THE CALLSIGN, IE, ACR X (AB)-(C) INSTEAD OF ACR X (A)-(BC), BUT ATC DOES NOT RESPOND IN THIS MANNER.
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.