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An LR35 on midway 4 departure off mdw overshot the 4 DME turn point and was questioned about his heading by the departure controller.
| Attributes | |
| ACN | 388580 |
| Time | |
| Date | 199712 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mdw |
| State Reference | IL |
| Altitude | msl bound lower : 1300 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial |
| Route In Use | departure other departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | other other : other pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 6850 flight time type : 2200 |
| ASRS Report | 388580 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | non adherence : clearance non adherence : published procedure other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Departing from mdw airport on the midway 4 departure you are to complete your initial turn within 4 DME of the airport. We completed our turn at approximately 4.3 DME. The controller asked us to verify our assigned heading. We told him it was 090 degrees and nothing more was said. We had a reduced climb power setting which I elected to use due to very cold conditions. We were required to climb to 1300 ft before beginning our turn. The slower climb delayed our turn slightly. I probably could have used a slightly higher bank angle to expedite the turn. I do not feel safety was compromised in any way.
Original NASA ASRS Text
Title: AN LR35 ON MIDWAY 4 DEP OFF MDW OVERSHOT THE 4 DME TURN POINT AND WAS QUESTIONED ABOUT HIS HDG BY THE DEP CTLR.
Narrative: DEPARTING FROM MDW ARPT ON THE MIDWAY 4 DEP YOU ARE TO COMPLETE YOUR INITIAL TURN WITHIN 4 DME OF THE ARPT. WE COMPLETED OUR TURN AT APPROX 4.3 DME. THE CTLR ASKED US TO VERIFY OUR ASSIGNED HDG. WE TOLD HIM IT WAS 090 DEGS AND NOTHING MORE WAS SAID. WE HAD A REDUCED CLB PWR SETTING WHICH I ELECTED TO USE DUE TO VERY COLD CONDITIONS. WE WERE REQUIRED TO CLB TO 1300 FT BEFORE BEGINNING OUR TURN. THE SLOWER CLB DELAYED OUR TURN SLIGHTLY. I PROBABLY COULD HAVE USED A SLIGHTLY HIGHER BANK ANGLE TO EXPEDITE THE TURN. I DO NOT FEEL SAFETY WAS COMPROMISED IN ANY WAY.
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.