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Near midair collision. A DC9-30 had traffic on the nose and 100 ft above during his east departure from mdw and on ord departure control. The other traffic was on mdw tower, inbound.
| Attributes | |
| ACN | 402912 |
| Time | |
| Date | 199805 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : mdw |
| State Reference | IL |
| Altitude | msl bound lower : 1900 msl bound upper : 1900 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | departure other enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other descent : approach |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 190 flight time total : 3400 flight time type : 190 |
| ASRS Report | 402912 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 100 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
Departing midway to the north, departure gave us a 090 degree heading. Rolling through 070 degrees I noticed a TCASII target 400 ft above us in the 2 O'clock position. I began a visual search and notified the captain target was coming straight at us and at 200 ft we began a leveloff. At 100 ft above us TCASII RA sounded 'monitor vertical speed.' at this point, TCASII showed target 100 ft directly above us. We never visually saw the other aircraft. We notified departure. They informed us that midway tower was controling the other aircraft and that the other aircraft had us visually.
Original NASA ASRS Text
Title: NMAC. A DC9-30 HAD TFC ON THE NOSE AND 100 FT ABOVE DURING HIS E DEP FROM MDW AND ON ORD DEP CTL. THE OTHER TFC WAS ON MDW TWR, INBOUND.
Narrative: DEPARTING MIDWAY TO THE N, DEP GAVE US A 090 DEG HDG. ROLLING THROUGH 070 DEGS I NOTICED A TCASII TARGET 400 FT ABOVE US IN THE 2 O'CLOCK POS. I BEGAN A VISUAL SEARCH AND NOTIFIED THE CAPT TARGET WAS COMING STRAIGHT AT US AND AT 200 FT WE BEGAN A LEVELOFF. AT 100 FT ABOVE US TCASII RA SOUNDED 'MONITOR VERT SPD.' AT THIS POINT, TCASII SHOWED TARGET 100 FT DIRECTLY ABOVE US. WE NEVER VISUALLY SAW THE OTHER ACFT. WE NOTIFIED DEP. THEY INFORMED US THAT MIDWAY TWR WAS CTLING THE OTHER ACFT AND THAT THE OTHER ACFT HAD US VISUALLY.
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.