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An S80 flight crew becomes aware of traffic at their altitude when their TCASII alerts them. ZID controller had descended the S80 to that altitude of FL350 8 mins earlier.
| Attributes | |
| ACN | 464680 |
| Time | |
| Date | 200002 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | WV |
| Altitude | msl single value : 35000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : enroute altitude change cruise : level |
| Route In Use | enroute airway : ns.airway |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : ns.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 464680 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| ASRS Report | 464535 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance controller : separated traffic other |
| Miss Distance | horizontal : 42000 vertical : 0 |
| Supplementary | |
| Problem Areas | Airspace Structure ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure Operational Deviation |
Narrative:
Approximately 200 NM southwest of the hnn VOR, ZID gave us a descent from FL370 to FL350 for traffic. About 8 mins later at approximately 150 NM southwest of hnn we received a TA on the TCASII. I asked center about the aircraft at our 1 O'clock position and 15 NM at our altitude. Center then gave that aircraft a heading correction. At around 12 NM we received a TCASII RA. The aircraft passed our 9 O'clock position at approximately 7 mi. We were IMC at the time and did not see the other aircraft.
Original NASA ASRS Text
Title: AN S80 FLC BECOMES AWARE OF TFC AT THEIR ALT WHEN THEIR TCASII ALERTS THEM. ZID CTLR HAD DSNDED THE S80 TO THAT ALT OF FL350 8 MINS EARLIER.
Narrative: APPROX 200 NM SW OF THE HNN VOR, ZID GAVE US A DSCNT FROM FL370 TO FL350 FOR TFC. ABOUT 8 MINS LATER AT APPROX 150 NM SW OF HNN WE RECEIVED A TA ON THE TCASII. I ASKED CTR ABOUT THE ACFT AT OUR 1 O'CLOCK POS AND 15 NM AT OUR ALT. CTR THEN GAVE THAT ACFT A HDG CORRECTION. AT AROUND 12 NM WE RECEIVED A TCASII RA. THE ACFT PASSED OUR 9 O'CLOCK POS AT APPROX 7 MI. WE WERE IMC AT THE TIME AND DID NOT SEE THE OTHER ACFT.
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.