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ZID controller amends climb clearance to a carj, and a similar call sign company carj acknowledges the original climb clearance, resulting in a conflict with a level, en route military jet.
| Attributes | |
| ACN | 589554 |
| Time | |
| Date | 200307 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | OH |
| Altitude | msl single value : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude climbout : vacating altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude climbout : vacating altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| ASRS Report | 589554 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : clearance non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 19000 vertical : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X issued FL210. Air carrier Y issued FL210, then amended to FL190. Air carrier X took air carrier Y clearance. Air carrier Y climbed into aircraft Z at FL200.
Original NASA ASRS Text
Title: ZID CTLR AMENDS CLB CLRNC TO A CARJ, AND A SIMILAR CALL SIGN COMPANY CARJ ACKNOWLEDGES THE ORIGINAL CLB CLRNC, RESULTING IN A CONFLICT WITH A LEVEL, ENRTE MIL JET.
Narrative: ACR X ISSUED FL210. ACR Y ISSUED FL210, THEN AMENDED TO FL190. ACR X TOOK ACR Y CLRNC. ACR Y CLBED INTO ACFT Z AT FL200.
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.