 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier medium large transport crew forced into a non adherence to ATC clearance by TCASII RA on crossing traffic, NORAC traffic at wrong altitude in violation of the heading altitude rule.
| Attributes | |
| ACN | 242800 |
| Time | |
| Date | 199306 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : bpr airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 10500 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| 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 |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 210 flight time total : 2800 flight time type : 1500 |
| ASRS Report | 242800 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : flight engineer |
| Experience | flight time last 90 days : 30 flight time total : 11000 flight time type : 1200 |
| ASRS Report | 242801 |
| Events | |
| Anomaly | altitude deviation : undershoot conflict : airborne less severe non adherence : clearance non adherence : published procedure other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other other : unspecified |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 2000 vertical : 1000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
5 mi out of arina on the boids arrival into dfw at 11000 ft, approach called VFR traffic at 2 O'clock converging at our altitude. Also had TA on TCASII. Controller commanded an expedited descent out of 11000 ft to 6000 ft. I was in control of the aircraft and started the descent. We received an RA at approximately 10500 ft, monitor descent and then a climb. I smoothly made an immediate climb back to 11000 ft. The aircraft was visually acquired and flew behind us approximately 2000 ft separation. The controller stated the high wing light aircraft had descended the same time we had and that they would track him down.
Original NASA ASRS Text
Title: ACR MLG CREW FORCED INTO A NON ADHERENCE TO ATC CLRNC BY TCASII RA ON XING TFC, NORAC TFC AT WRONG ALT IN VIOLATION OF THE HDG ALT RULE.
Narrative: 5 MI OUT OF ARINA ON THE BOIDS ARR INTO DFW AT 11000 FT, APCH CALLED VFR TFC AT 2 O'CLOCK CONVERGING AT OUR ALT. ALSO HAD TA ON TCASII. CTLR COMMANDED AN EXPEDITED DSCNT OUT OF 11000 FT TO 6000 FT. I WAS IN CTL OF THE ACFT AND STARTED THE DSCNT. WE RECEIVED AN RA AT APPROX 10500 FT, MONITOR DSCNT AND THEN A CLB. I SMOOTHLY MADE AN IMMEDIATE CLB BACK TO 11000 FT. THE ACFT WAS VISUALLY ACQUIRED AND FLEW BEHIND US APPROX 2000 FT SEPARATION. THE CTLR STATED THE HIGH WING LIGHT ACFT HAD DSNDED THE SAME TIME WE HAD AND THAT THEY WOULD TRACK HIM DOWN.
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.