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Visual approach cgx has potential conflict with medium large transport on SID out of mdw.
| Attributes | |
| ACN | 87417 |
| Time | |
| Date | 198805 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : cgx |
| State Reference | IL |
| Altitude | msl bound lower : 1600 msl bound upper : 1600 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : cgx |
| Operator | other |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : cfi |
| Experience | flight time last 90 days : 140 flight time total : 14400 flight time type : 4000 |
| ASRS Report | 87417 |
| Person 2 | |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 0 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
When the incident occurred we had been cleared for a visual approach to runway 36 at cgx. At approximately 1600' MSL, as I recall, I called for 60% flaps. When my copilot reached for the flap activator handle, he caught sight of an medium large transport through my side window. The medium large transport looked to be at our exact altitude and aimed straight at us. Although I estimated the medium large transport to be 1-2 mi away, I didn't believe it to be of any significance as far as safety to our particular flight was concerned--but we did question the medium large transport altitude and wondered why he was that close. We were later told that the medium large transport was on a canal 3 departure from mdw. I think the canal 3 SID should be rewritten to prevent conflicts with the air traffic area at cgx. 91.87 D(1) prescribes traffic pattern altitude for turbine aircraft to be 1500' AGL, 2100' MSL. A large portion of aircraft using cgx are turbine aircraft. The SID calls for departing aircraft (DME equipped) to stay at 2000' MSL until 6 DME from mdw, which puts them still at 2000' MSL about 1 mi west of cgx and indicating 200 KIAS. I would suggest all departures from mdw use the mdw 3 departure except that eastbound traffic climb immediately to 3100' MSL or assigned higher.
Original NASA ASRS Text
Title: VISUAL APCH CGX HAS POTENTIAL CONFLICT WITH MLG ON SID OUT OF MDW.
Narrative: WHEN THE INCIDENT OCCURRED WE HAD BEEN CLRED FOR A VISUAL APCH TO RWY 36 AT CGX. AT APPROX 1600' MSL, AS I RECALL, I CALLED FOR 60% FLAPS. WHEN MY COPLT REACHED FOR THE FLAP ACTIVATOR HANDLE, HE CAUGHT SIGHT OF AN MLG THROUGH MY SIDE WINDOW. THE MLG LOOKED TO BE AT OUR EXACT ALT AND AIMED STRAIGHT AT US. ALTHOUGH I ESTIMATED THE MLG TO BE 1-2 MI AWAY, I DIDN'T BELIEVE IT TO BE OF ANY SIGNIFICANCE AS FAR AS SAFETY TO OUR PARTICULAR FLT WAS CONCERNED--BUT WE DID QUESTION THE MLG ALT AND WONDERED WHY HE WAS THAT CLOSE. WE WERE LATER TOLD THAT THE MLG WAS ON A CANAL 3 DEP FROM MDW. I THINK THE CANAL 3 SID SHOULD BE REWRITTEN TO PREVENT CONFLICTS WITH THE ATA AT CGX. 91.87 D(1) PRESCRIBES TFC PATTERN ALT FOR TURBINE ACFT TO BE 1500' AGL, 2100' MSL. A LARGE PORTION OF ACFT USING CGX ARE TURBINE ACFT. THE SID CALLS FOR DEPARTING ACFT (DME EQUIPPED) TO STAY AT 2000' MSL UNTIL 6 DME FROM MDW, WHICH PUTS THEM STILL AT 2000' MSL ABOUT 1 MI W OF CGX AND INDICATING 200 KIAS. I WOULD SUGGEST ALL DEPS FROM MDW USE THE MDW 3 DEP EXCEPT THAT EBND TFC CLB IMMEDIATELY TO 3100' MSL OR ASSIGNED HIGHER.
Data retrieved from NASA's ASRS site as of August 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.