 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Controller was going to have less than standard separation between air carrier X and aircraft Y reverted to visual separation. TCASII TA.
| Attributes | |
| ACN | 196792 |
| Time | |
| Date | 199112 |
| Day | Thu |
| Place | |
| Locale Reference | atc facility : ott |
| State Reference | MD |
| Altitude | msl bound lower : 8000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dca |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 6000 |
| ASRS Report | 196792 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 18000 vertical : 700 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
We were cleared to cross nottingham at 9000 on ott STAR, then descend to 5000 ft. There was traffic in front of us, opposite direction, climbing to 8000 ft. Our TCASII called traffic. As we descended through 8700 ft MSL, the controller asked us to return to 9000 ft. We said we had aircraft Y. He said continue descent to 5000 ft.
Original NASA ASRS Text
Title: CTLR WAS GOING TO HAVE LTSS BTWN ACR X AND ACFT Y REVERTED TO VISUAL SEPARATION. TCASII TA.
Narrative: WE WERE CLRED TO CROSS NOTTINGHAM AT 9000 ON OTT STAR, THEN DSND TO 5000 FT. THERE WAS TFC IN FRONT OF US, OPPOSITE DIRECTION, CLBING TO 8000 FT. OUR TCASII CALLED TFC. AS WE DSNDED THROUGH 8700 FT MSL, THE CTLR ASKED US TO RETURN TO 9000 FT. WE SAID WE HAD ACFT Y. HE SAID CONTINUE DSCNT TO 5000 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.