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During a visual approach to a parallel runway, flight crew took evasive action in response to a TCASII RA resulting from another aircraft's converging course to the other parallel runway.
| Attributes | |
| ACN | 232375 |
| Time | |
| Date | 199301 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : den |
| State Reference | CO |
| Altitude | msl bound lower : 7600 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : den |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 14800 flight time type : 1300 |
| ASRS Report | 232375 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 150 flight time total : 1400 flight time type : 1000 |
| ASRS Report | 232297 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 2500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While inbound to denver stapleton and being radar vectored in marginal VFR conditions (haze) for a visual to runway 17R, was given an ese heading to maintain 8000 ft (see diagram reverse side). While on a 150 degree heading was given 12 O'clock traffic being vectored for visual to parallel runway 17L. Visually acquired aircraft then lost contact as I was also trying to acquire runway visually. First officer flying responded to TCASII RA which commanded a descent. Descended to 7600 ft. Immediately conflict was visually resolved and climbed to 8000 ft and informed ATC level at 8000 ft.
Original NASA ASRS Text
Title: DURING A VISUAL APCH TO A PARALLEL RWY, FLC TOOK EVASIVE ACTION IN RESPONSE TO A TCASII RA RESULTING FROM ANOTHER ACFT'S CONVERGING COURSE TO THE OTHER PARALLEL RWY.
Narrative: WHILE INBOUND TO DENVER STAPLETON AND BEING RADAR VECTORED IN MARGINAL VFR CONDITIONS (HAZE) FOR A VISUAL TO RWY 17R, WAS GIVEN AN ESE HDG TO MAINTAIN 8000 FT (SEE DIAGRAM REVERSE SIDE). WHILE ON A 150 DEG HDG WAS GIVEN 12 O'CLOCK TFC BEING VECTORED FOR VISUAL TO PARALLEL RWY 17L. VISUALLY ACQUIRED ACFT THEN LOST CONTACT AS I WAS ALSO TRYING TO ACQUIRE RWY VISUALLY. FO FLYING RESPONDED TO TCASII RA WHICH COMMANDED A DSCNT. DSNDED TO 7600 FT. IMMEDIATELY CONFLICT WAS VISUALLY RESOLVED AND CLBED TO 8000 FT AND INFORMED ATC LEVEL AT 8000 FT.
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.