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Large transport flight crew were cleared for an RNAV visual approach. They were fully configured; but at about 500 ft AGL they received a TCAS traffic alert. They observed two helicopters flying close to each other and about 200 feet lower than them. They executed a missed approach and returned for an uneventful landing.
| Attributes | |
| ACN | 1294838 |
| Time | |
| Date | 201509 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | LAS.Airport |
| State Reference | NV |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 236 Flight Crew Type 236 |
| Events | |
| Anomaly | ATC Issue All Types Conflict NMAC Deviation - Procedural Published Material / Policy |
| Miss Distance | Vertical 200 |
Narrative:
We were cleared for the RNAV visual approach to runway 19R at las. Everything was normal; and at about 500 ft AGL; we received a TCAS traffic alert. We were fully configured at the time; and the first officer then saw two helicopters (flying very close to each other) just to the right of our flight path; about 200 feet lower than we were. I initiated a go-around; and we told tower of the TCAS event. We were never informed by ATC of any traffic at all during any phase of the approach. We then received vectors to an uneventful landing on 25L.
Original NASA ASRS Text
Title: Large transport flight crew were cleared for an RNAV Visual Approach. They were fully configured; but at about 500 ft AGL they received a TCAS Traffic Alert. They observed two helicopters flying close to each other and about 200 feet lower than them. They executed a missed approach and returned for an uneventful landing.
Narrative: We were cleared for the RNAV Visual Approach to Runway 19R at LAS. Everything was normal; and at about 500 ft AGL; we received a TCAS Traffic Alert. We were fully configured at the time; and the First Officer then saw two helicopters (flying very close to each other) just to the right of our flight path; about 200 feet lower than we were. I initiated a go-around; and we told Tower of the TCAS event. We were never informed by ATC of any traffic at all during any phase of the approach. We then received vectors to an uneventful landing on 25L.
Data retrieved from NASA's ASRS site 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.