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A320 flight crew on the ILS to runway 1C at iad describe a TCAS event with a B777 intercepting the runway 1L centerline for the visual. A B757 crew following the B777 described the event from their perspective.
| Attributes | |
| ACN | 912857 |
| Time | |
| Date | 201010 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | IAD.Airport |
| State Reference | DC |
| Aircraft 1 | |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | Visual Approach |
| Aircraft 2 | |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR SHONN |
| Person 1 | |
| Function | Pilot Flying First Officer |
| Experience | Flight Crew Last 90 Days 140 Flight Crew Total 12000 Flight Crew Type 5900 |
| Person 2 | |
| Function | Captain Pilot Not Flying Check Pilot |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 220 Flight Crew Total 14000 Flight Crew Type 1400 |
| Events | |
| Anomaly | Conflict Airborne Conflict Deviation - Procedural Clearance |
| Miss Distance | Horizontal 900 Vertical 400 |
Narrative:
On approach to runway 1C at iad at 2;200 MSL on an approximate 6-7 NM visual final at 180 KIAS with flaps 2 and gear up; we noticed an aircraft coming at us from the left slightly below our altitude. As we were contemplating either taking evasive action or querying tower; we received a TCAS RA to climb; which we complied with. The other aircraft turned towards the correct runway 1L; and the RA went away. We were able to continue the approach and land with no other issues. The approximate range was 300-500 ft vertically and 800-1;000 laterally.
Original NASA ASRS Text
Title: A320 flight crew on the ILS to Runway 1C at IAD describe a TCAS event with a B777 intercepting the Runway 1L centerline for the visual. A B757 crew following the B777 described the event from their perspective.
Narrative: On approach to Runway 1C at IAD at 2;200 MSL on an approximate 6-7 NM visual final at 180 KIAS with flaps 2 and gear up; we noticed an aircraft coming at us from the left slightly below our altitude. As we were contemplating either taking evasive action or querying Tower; we received a TCAS RA to climb; which we complied with. The other aircraft turned towards the correct Runway 1L; and the RA went away. We were able to continue the approach and land with no other issues. The approximate range was 300-500 FT vertically and 800-1;000 laterally.
Data retrieved from NASA's ASRS site as of April 2012 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.