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Air carrier Z had less than standard separation from small aircraft XXX when cltr used wrong call letter. System error.
| Attributes | |
| ACN | 192059 |
| Time | |
| Date | 199110 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mdw |
| State Reference | IL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Fixed Gear |
| Flight Phase | ground other : taxi |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : ground |
| Qualification | controller : non radar |
| Experience | controller non radar : 6 controller radar : 1 |
| ASRS Report | 192059 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : instrument |
| Events | |
| Anomaly | conflict : ground less severe incursion : runway non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 1000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
After I told small aircraft XXX to hold short of runway 22R, traffic in the flare he acknowledged. There was an air carrier Z over the numbers in the flare. Holding short of runway 22L was light transport xxy. There was a wind shift so we were landing and departing runways 22L, 22R, 31C. I then thought I said light transport xxy cross runway 22L turn right on yankee, left on kilo and hold short of the tie down for your delay. In actuality I said light transport XXX cross runway 22L turn right, etc. When I finished I saw small aircraft XXX start to move. At this time there was 3 seconds of static and squeal from 3 aircraft calling ground. I stated quite loudly XXX stop, at this time he was still short of runway 22R. Small aircraft XXX continued across runway 22R with air carrier Z rolling slowly out approximately 1000 ft up runway (never even got close). When we talked later on the telephone to the pilot of XXX he said he heard xx something so he went ahead, additionally when asked of air carrier Z he said he saw it and thought he better hurry across. As a controller I should have stressed the fact of similar sounding call signs. As the pilot I believe he should become more aware of the airport and listen more carefully.
Original NASA ASRS Text
Title: ACR Z HAD LTSS FROM SMA XXX WHEN CLTR USED WRONG CALL LETTER. SYS ERROR.
Narrative: AFTER I TOLD SMA XXX TO HOLD SHORT OF RWY 22R, TFC IN THE FLARE HE ACKNOWLEDGED. THERE WAS AN ACR Z OVER THE NUMBERS IN THE FLARE. HOLDING SHORT OF RWY 22L WAS LTT XXY. THERE WAS A WIND SHIFT SO WE WERE LNDG AND DEPARTING RWYS 22L, 22R, 31C. I THEN THOUGHT I SAID LTT XXY CROSS RWY 22L TURN R ON YANKEE, L ON KILO AND HOLD SHORT OF THE TIE DOWN FOR YOUR DELAY. IN ACTUALITY I SAID LTT XXX CROSS RWY 22L TURN R, ETC. WHEN I FINISHED I SAW SMA XXX START TO MOVE. AT THIS TIME THERE WAS 3 SECONDS OF STATIC AND SQUEAL FROM 3 ACFT CALLING GND. I STATED QUITE LOUDLY XXX STOP, AT THIS TIME HE WAS STILL SHORT OF RWY 22R. SMA XXX CONTINUED ACROSS RWY 22R WITH ACR Z ROLLING SLOWLY OUT APPROX 1000 FT UP RWY (NEVER EVEN GOT CLOSE). WHEN WE TALKED LATER ON THE TELEPHONE TO THE PLT OF XXX HE SAID HE HEARD XX SOMETHING SO HE WENT AHEAD, ADDITIONALLY WHEN ASKED OF ACR Z HE SAID HE SAW IT AND THOUGHT HE BETTER HURRY ACROSS. AS A CTLR I SHOULD HAVE STRESSED THE FACT OF SIMILAR SOUNDING CALL SIGNS. AS THE PLT I BELIEVE HE SHOULD BECOME MORE AWARE OF THE ARPT AND LISTEN MORE CAREFULLY.
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.