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Less than comfortable separation is indicated on TCASII between 2 B727's as one was descending on vectors north of bfm VOR in the class a airspace.
| Attributes | |
| ACN | 593596 |
| Time | |
| Date | 200309 |
| Day | Wed |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| State Reference | AL |
| Altitude | msl bound lower : 25000 msl bound upper : 26000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 50 flight time total : 8500 flight time type : 2500 |
| ASRS Report | 593596 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 30 flight time total : 11500 flight time type : 4000 |
| ASRS Report | 593293 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation other spatial deviation |
| Independent Detector | aircraft equipment : tcas other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
On descent from FL290 to FL230 heading 150 degrees, received vector 15 degrees right for descent. Passing about FL260, received TCASII TA 'traffic, traffic.' obtained visual on traffic 11:30 O'clock position slightly low. TCASII indicated -200 ft separation initially, decreasing. Center gave another vector right to 220 degrees. Observed slight right to left crossing angle on traffic. Traffic passed slightly below and down the left side.
Original NASA ASRS Text
Title: LESS THAN COMFORTABLE SEPARATION IS INDICATED ON TCASII BTWN 2 B727'S AS ONE WAS DSNDING ON VECTORS N OF BFM VOR IN THE CLASS A AIRSPACE.
Narrative: ON DSCNT FROM FL290 TO FL230 HDG 150 DEGS, RECEIVED VECTOR 15 DEGS R FOR DSCNT. PASSING ABOUT FL260, RECEIVED TCASII TA 'TFC, TFC.' OBTAINED VISUAL ON TFC 11:30 O'CLOCK POS SLIGHTLY LOW. TCASII INDICATED -200 FT SEPARATION INITIALLY, DECREASING. CTR GAVE ANOTHER VECTOR R TO 220 DEGS. OBSERVED SLIGHT R TO L XING ANGLE ON TFC. TFC PASSED SLIGHTLY BELOW AND DOWN THE L SIDE.
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.