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Flight crew advised of unidented traffic. Flight crew requested turn. TCASII RA turn and climb. Flight crew saw traffic pass 600 ft to right same altitude. First officer alleges TCASII saved a midair.
| Attributes | |
| ACN | 188858 |
| Time | |
| Date | 199109 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : pns |
| State Reference | FL |
| Altitude | msl bound lower : 8000 msl bound upper : 8500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pns |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent other |
| Route In Use | arrival other enroute airway : pns |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 220 flight time total : 7000 flight time type : 900 |
| ASRS Report | 188858 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : cfi |
| Experience | flight time last 90 days : 230 flight time total : 10000 flight time type : 2800 |
| ASRS Report | 188856 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : took evasive action flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | horizontal : 600 vertical : 0 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
ATC advised crew of 2 targets, 1 unidented. Crew asked for turn when TCASII showed unidented target approaching. ATC delayed clearance turn request until evasive action taken per TCASII RA command, climb 5000 FPM, 30 degree angle bank to left. Traffic observed by captain passing right of our aircraft, same altitude. No comment from ATC. TCASII worked well and saved day.
Original NASA ASRS Text
Title: FLC ADVISED OF UNIDENTED TFC. FLC REQUESTED TURN. TCASII RA TURN AND CLB. FLC SAW TFC PASS 600 FT TO R SAME ALT. FO ALLEGES TCASII SAVED A MIDAIR.
Narrative: ATC ADVISED CREW OF 2 TARGETS, 1 UNIDENTED. CREW ASKED FOR TURN WHEN TCASII SHOWED UNIDENTED TARGET APCHING. ATC DELAYED CLRNC TURN REQUEST UNTIL EVASIVE ACTION TAKEN PER TCASII RA COMMAND, CLB 5000 FPM, 30 DEG ANGLE BANK TO L. TFC OBSERVED BY CAPT PASSING R OF OUR ACFT, SAME ALT. NO COMMENT FROM ATC. TCASII WORKED WELL AND SAVED DAY.
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.