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DC9 flight crew initiate TCASII evasive maneuver due to conflict with an A320 under M98 departing msp.
| Attributes | |
| ACN | 504010 |
| Time | |
| Date | 200103 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : gep.vortac |
| State Reference | MN |
| Altitude | msl bound lower : 4000 msl bound upper : 4600 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Snow |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : m98.tracon tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude climbout : vacating altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : m98.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 220 flight time total : 14200 flight time type : 4300 |
| ASRS Report | 504010 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : undershoot conflict : airborne critical inflight encounter : weather non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert atc equipment other atc equipment : radar aircraft equipment : tcas other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 2500 vertical : 400 |
| Supplementary | |
| Problem Areas | Weather ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure Operational Error |
Narrative:
After departure runway 12L msp, received clearance to 'turn right 240 degrees, expedite through 7000 ft, maintain 17000 ft.' at approximately 4600 ft, received TCASII TA, followed immediately by a descend RA. Complied with RA and ATC immediately changed cleared altitude to 4000 ft. Visually acquired A320 ahead and slightly above us, established 4000 ft with subsequent clear of conflict. We departed the north runway (runway 12L) due to ground congestion at msp during snow and deicing. I suspect the heading was given erroneously by the controller, who may have assumed we departed runway 12R, since our first fix was south and normally the flight would have departed runway 12R.
Original NASA ASRS Text
Title: DC9 FLC INITIATE TCASII EVASIVE MANEUVER DUE TO CONFLICT WITH AN A320 UNDER M98 DEPARTING MSP.
Narrative: AFTER DEP RWY 12L MSP, RECEIVED CLRNC TO 'TURN R 240 DEGS, EXPEDITE THROUGH 7000 FT, MAINTAIN 17000 FT.' AT APPROX 4600 FT, RECEIVED TCASII TA, FOLLOWED IMMEDIATELY BY A DSND RA. COMPLIED WITH RA AND ATC IMMEDIATELY CHANGED CLRED ALT TO 4000 FT. VISUALLY ACQUIRED A320 AHEAD AND SLIGHTLY ABOVE US, ESTABLISHED 4000 FT WITH SUBSEQUENT CLR OF CONFLICT. WE DEPARTED THE N RWY (RWY 12L) DUE TO GND CONGESTION AT MSP DURING SNOW AND DEICING. I SUSPECT THE HDG WAS GIVEN ERRONEOUSLY BY THE CTLR, WHO MAY HAVE ASSUMED WE DEPARTED RWY 12R, SINCE OUR FIRST FIX WAS S AND NORMALLY THE FLT WOULD HAVE DEPARTED RWY 12R.
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.