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Air carrier has close proximity with air carrier lined up for same runway. Local controller indicates clearance to parallel runway.
| Attributes | |
| ACN | 224454 |
| Time | |
| Date | 199210 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | msl bound lower : 2500 msl bound upper : 3500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 180 flight time total : 10300 flight time type : 250 |
| ASRS Report | 224454 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Received and acknowledged initial approach clearance to 'expect visual approach 27L.' reported runway in sight and received clearance for the visual approach. Upon lining up for 27L, noticed an large transport 1000 ft above also lined up for 27 left. Immediately instructed the first officer (PF) to turn right. Several seconds later, received a TCASII warning, and received another call from approach control informing us that we were cleared for the visual to 27R. Acknowledged and stated that this was the first time we had heard and confirmed 27R. In this situation, the system worked as designed: this was a visual approach, and the other aircraft was sighted in plenty of time to avoid a conflict. The TCASII system provided a reliable backup, and approach control issued further instructions in a timely manner.
Original NASA ASRS Text
Title: ACR HAS CLOSE PROX WITH ACR LINED UP FOR SAME RWY. LCL CTLR INDICATES CLRNC TO PARALLEL RWY.
Narrative: RECEIVED AND ACKNOWLEDGED INITIAL APCH CLRNC TO 'EXPECT VISUAL APCH 27L.' RPTED RWY IN SIGHT AND RECEIVED CLRNC FOR THE VISUAL APCH. UPON LINING UP FOR 27L, NOTICED AN LGT 1000 FT ABOVE ALSO LINED UP FOR 27 L. IMMEDIATELY INSTRUCTED THE FO (PF) TO TURN R. SEVERAL SECONDS LATER, RECEIVED A TCASII WARNING, AND RECEIVED ANOTHER CALL FROM APCH CTL INFORMING US THAT WE WERE CLRED FOR THE VISUAL TO 27R. ACKNOWLEDGED AND STATED THAT THIS WAS THE FIRST TIME WE HAD HEARD AND CONFIRMED 27R. IN THIS SITUATION, THE SYS WORKED AS DESIGNED: THIS WAS A VISUAL APCH, AND THE OTHER ACFT WAS SIGHTED IN PLENTY OF TIME TO AVOID A CONFLICT. THE TCASII SYS PROVIDED A RELIABLE BACKUP, AND APCH CTL ISSUED FURTHER INSTRUCTIONS IN A TIMELY 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.