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A charter pilot approaching dpa did not realize that his aircraft was below the ord class B and exceeded 250kt until alerted by ATC.
| Attributes | |
| ACN | 845398 |
| Time | |
| Date | 200907 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | DPA.Airport |
| State Reference | IL |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Light Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Initial Approach |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 49 Flight Crew Total 7135 Flight Crew Type 1260 |
| Events | |
| Anomaly | Deviation - Procedural FAR Deviation - Procedural Published Material / Policy Deviation - Speed All Types |
Narrative:
Approaching dpa. On vectors from chicago TRACON. They queried our speed. I responded '250 KTS.' controller advised we should be at 200 KTS below class B; which I realize. I advised I thought we were within class B. Controller said we had been but he thought we were now below it. I advised we would slow to 200 KTS; he responded by telling us to reduce speed to 200 KTS. No incidents arose. Events could be avoided in two ways: 1) study class B airspace page in the commercial airport charts more carefully before approaching a class B airspace area. 2) mandate that controllers advise turbojets on IFR when they are being cleared to an altitude beneath class B so the crew will know to slow to 200 KTS. If the weather was IMC; crew workload would make it very difficult to know if the aircraft is below class B.
Original NASA ASRS Text
Title: A Charter Pilot approaching DPA did not realize that his aircraft was below the ORD Class B and exceeded 250kt until alerted by ATC.
Narrative: Approaching DPA. On vectors from Chicago TRACON. They queried our speed. I responded '250 KTS.' Controller advised we should be at 200 KTS below Class B; which I realize. I advised I thought we were within Class B. Controller said we had been but he thought we were now below it. I advised we would slow to 200 KTS; he responded by telling us to reduce speed to 200 KTS. No incidents arose. Events could be avoided in two ways: 1) Study class B airspace page in the commercial airport charts more carefully before approaching a Class B airspace area. 2) Mandate that Controllers advise turbojets on IFR when they are being cleared to an altitude beneath Class B so the crew will know to slow to 200 KTS. If the weather was IMC; crew workload would make it very difficult to know if the aircraft is below Class B.
Data retrieved from NASA's ASRS site as of April 2012 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.