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A320 flight crew overshoot assigned altitude due to evasive maneuver from C90 issued crossing C172.
| Attributes | |
| ACN | 502130 |
| Time | |
| Date | 200102 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : ord.vor |
| State Reference | IL |
| Altitude | msl bound lower : 5000 msl bound upper : 5250 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : c90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : c90.tracon |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 120 flight time total : 10000 flight time type : 1000 |
| ASRS Report | 502130 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 5000 flight time type : 1300 |
| ASRS Report | 502801 |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : airborne critical |
| Independent Detector | aircraft equipment : tcas |
| Resolutory Action | controller : issued advisory controller : issued new clearance flight crew : returned to assigned altitude |
| Miss Distance | horizontal : 5000 vertical : 300 |
| Supplementary | |
| Problem Areas | ATC Human Performance Airspace Structure Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
Departed runway 4L ord, 140 degree heading, climb to 5000 ft. Climbing through about 3000 ft, ATC said VFR traffic 12 O'clock, 5500 ft. I did not hear the distance. My first officer later said it was 5 mi out. I shallowed my climb rate while accelerating to 250 KTS. We were then given a right turn, 180 degree heading about the time I reached 4500 ft. At some point we had an amber alert TCASII followed by 'reduce vertical climb.' my first officer visually spotted a light cessna above to the right at 1-2 O'clock position. I was somewhat distraction in the turn and climbed to 5250 ft while looking, but never saw the VFR target. I think another update by ATC before giving us the turn would have been better. We thought ATC was giving us the turn after passing the target. Supplemental information from acn 502801: departure gave us a hg of 180 degrees. At this time I had the traffic in sight, and we passed directly underneath a C172. As I looked back inside after the traffic was past us, I noticed we still had a slow (200-300 FPM) climb, and were passing 5100 ft. I pointed to the altitude window and reminded the captain (PF) that we were assigned 5000 ft.
Original NASA ASRS Text
Title: A320 FLC OVERSHOOT ASSIGNED ALT DUE TO EVASIVE MANEUVER FROM C90 ISSUED XING C172.
Narrative: DEPARTED RWY 4L ORD, 140 DEG HDG, CLB TO 5000 FT. CLBING THROUGH ABOUT 3000 FT, ATC SAID VFR TFC 12 O'CLOCK, 5500 FT. I DID NOT HEAR THE DISTANCE. MY FO LATER SAID IT WAS 5 MI OUT. I SHALLOWED MY CLB RATE WHILE ACCELERATING TO 250 KTS. WE WERE THEN GIVEN A R TURN, 180 DEG HDG ABOUT THE TIME I REACHED 4500 FT. AT SOME POINT WE HAD AN AMBER ALERT TCASII FOLLOWED BY 'REDUCE VERT CLB.' MY FO VISUALLY SPOTTED A LIGHT CESSNA ABOVE TO THE R AT 1-2 O'CLOCK POS. I WAS SOMEWHAT DISTR IN THE TURN AND CLBED TO 5250 FT WHILE LOOKING, BUT NEVER SAW THE VFR TARGET. I THINK ANOTHER UPDATE BY ATC BEFORE GIVING US THE TURN WOULD HAVE BEEN BETTER. WE THOUGHT ATC WAS GIVING US THE TURN AFTER PASSING THE TARGET. SUPPLEMENTAL INFO FROM ACN 502801: DEP GAVE US A HG OF 180 DEGS. AT THIS TIME I HAD THE TFC IN SIGHT, AND WE PASSED DIRECTLY UNDERNEATH A C172. AS I LOOKED BACK INSIDE AFTER THE TFC WAS PAST US, I NOTICED WE STILL HAD A SLOW (200-300 FPM) CLB, AND WERE PASSING 5100 FT. I POINTED TO THE ALT WINDOW AND REMINDED THE CAPT (PF) THAT WE WERE ASSIGNED 5000 FT.
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.