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A319 flight crew crossed departure runway hold line at ord as aircraft with similar call sign is issued runway clearance.
| Attributes | |
| ACN | 634715 |
| Time | |
| Date | 200410 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : taxi |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : ord.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 150 flight time total : 6000 flight time type : 1000 |
| ASRS Report | 634715 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain observation : company check pilot oversight : pic |
| Experience | flight time last 90 days : 185 flight time total : 10000 flight time type : 3100 |
| ASRS Report | 634714 |
| Events | |
| Anomaly | conflict : ground less severe incursion : runway non adherence : published procedure non adherence : clearance |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : took precautionary avoidance action |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While holding short of runway 4L at ord, we were cleared into position and hold. We readback the clearance and started to move. When we started to move, tower asked if we could still hold short. We did not understand the questioning. It seems that tower had cleared an air carrier Y B737 into position and hold. We stopped with our nose just on or past the hold short line and air carrier Y took the runway and took off. Then we were cleared for takeoff. The cause of the misunderstanding was with communications and similar call signs. We were air carrier X abc and the other call sign was air carrier Y acc. The human factors would have to be the similar call signs and communications. I do not believe that air carrier Y had responded to the position and hold. When the controller heard the readback, he must have assumed it was air carrier Y. When he saw us moving, he realized that the wrong plane was taking the runway. At that point he did not tell us to stop or the clearance was not ours but asked if we could still hold short. With that comment, we stopped to figure out exactly what he was asking. After several radio xmissions, the situation became clear.
Original NASA ASRS Text
Title: A319 FLT CREW CROSSED DEP RWY HOLD LINE AT ORD AS ACFT WITH SIMILAR CALL SIGN IS ISSUED RWY CLRNC.
Narrative: WHILE HOLDING SHORT OF RWY 4L AT ORD, WE WERE CLRED INTO POS AND HOLD. WE READBACK THE CLRNC AND STARTED TO MOVE. WHEN WE STARTED TO MOVE, TWR ASKED IF WE COULD STILL HOLD SHORT. WE DID NOT UNDERSTAND THE QUESTIONING. IT SEEMS THAT TWR HAD CLRED AN ACR Y B737 INTO POS AND HOLD. WE STOPPED WITH OUR NOSE JUST ON OR PAST THE HOLD SHORT LINE AND ACR Y TOOK THE RWY AND TOOK OFF. THEN WE WERE CLRED FOR TKOF. THE CAUSE OF THE MISUNDERSTANDING WAS WITH COMS AND SIMILAR CALL SIGNS. WE WERE ACR X ABC AND THE OTHER CALL SIGN WAS ACR Y ACC. THE HUMAN FACTORS WOULD HAVE TO BE THE SIMILAR CALL SIGNS AND COMS. I DO NOT BELIEVE THAT ACR Y HAD RESPONDED TO THE POS AND HOLD. WHEN THE CTLR HEARD THE READBACK, HE MUST HAVE ASSUMED IT WAS ACR Y. WHEN HE SAW US MOVING, HE REALIZED THAT THE WRONG PLANE WAS TAKING THE RWY. AT THAT POINT HE DID NOT TELL US TO STOP OR THE CLRNC WAS NOT OURS BUT ASKED IF WE COULD STILL HOLD SHORT. WITH THAT COMMENT, WE STOPPED TO FIGURE OUT EXACTLY WHAT HE WAS ASKING. AFTER SEVERAL RADIO XMISSIONS, THE SIT BECAME CLR.
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.