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Medium large transport cleared to descend has TCASII TA, then RA to climb. Aircraft passes 500 ft below.
| Attributes | |
| ACN | 207356 |
| Time | |
| Date | 199204 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : clt |
| State Reference | NC |
| Altitude | msl bound lower : 11500 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : clt |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 13000 flight time type : 5000 |
| ASRS Report | 207356 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Events | |
| Anomaly | conflict : nmac |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 500 |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
During descent to 16000 over shine intersection we received a TA for 10500 traffic at 11 O'clock. ATC then calls unconfirmed VFR traffic at 10500. ATC said we 'might want' to level at 12000 until clear of traffic. At this time VFR traffic started to climb. We had past 12000 before ATC called, reading 11800. Last TCASII information noted, we were 11800 leveling from a descent, VFR traffic was 11200 in a climb. RA was issued with a reverse. As we started to climb back through 12000 I saw a single engine small aircraft go under aircraft 8-9 O'clock. TCASII did it's job.
Original NASA ASRS Text
Title: MLG CLRED TO DSND HAS TCASII TA, THEN RA TO CLB. ACFT PASSES 500 FT BELOW.
Narrative: DURING DSCNT TO 16000 OVER SHINE INTXN WE RECEIVED A TA FOR 10500 TFC AT 11 O'CLOCK. ATC THEN CALLS UNCONFIRMED VFR TFC AT 10500. ATC SAID WE 'MIGHT WANT' TO LEVEL AT 12000 UNTIL CLR OF TFC. AT THIS TIME VFR TFC STARTED TO CLB. WE HAD PAST 12000 BEFORE ATC CALLED, READING 11800. LAST TCASII INFO NOTED, WE WERE 11800 LEVELING FROM A DSCNT, VFR TFC WAS 11200 IN A CLB. RA WAS ISSUED WITH A REVERSE. AS WE STARTED TO CLB BACK THROUGH 12000 I SAW A SINGLE ENG SMA GO UNDER ACFT 8-9 O'CLOCK. TCASII DID IT'S JOB.
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.