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A DA2000 approaching sna was advised to slow to 200 KTS by socal TRACON since they were operating under the floor of class B airspace.
| Attributes | |
| ACN | 709827 |
| Time | |
| Date | 200609 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sna.airport |
| State Reference | CA |
| Altitude | msl single value : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Falcon 2000 |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 8320 flight time type : 1570 |
| ASRS Report | 709827 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 75 flight time total : 9000 flight time type : 2500 |
| ASRS Report | 710463 |
| Events | |
| Anomaly | non adherence : far other anomaly other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance Airspace Structure |
| Primary Problem | Flight Crew Human Performance |
Narrative:
We departed san for sna via the peble 3 departure sli then direct. Initial cruise altitude was 10000 ft MSL. Approximately 40 mi south of sli we were given a descent to 6000 ft MSL and vectors off the peble 3 to the west. We then switched controllers and he advised us to slow to 200 KTS for flight below the class B. We do not know if we were under class B at this point or if it was merely a friendly advisory. We promptly slowed to 200 KTS. In retrospect we should have paid more attention to the la area chart. While I believe some of the class B boundaries are hard to define we would have had a better picture when we were getting close. Supplemental information from acn 710463: I always thought when on an IFR flight plan being vectored in and around class B airspace you didn't have to comply with the 200 KTS. I was wrong.
Original NASA ASRS Text
Title: A DA2000 APCHING SNA WAS ADVISED TO SLOW TO 200 KTS BY SOCAL TRACON SINCE THEY WERE OPERATING UNDER THE FLOOR OF CLASS B AIRSPACE.
Narrative: WE DEPARTED SAN FOR SNA VIA THE PEBLE 3 DEP SLI THEN DIRECT. INITIAL CRUISE ALT WAS 10000 FT MSL. APPROX 40 MI S OF SLI WE WERE GIVEN A DSCNT TO 6000 FT MSL AND VECTORS OFF THE PEBLE 3 TO THE W. WE THEN SWITCHED CTLRS AND HE ADVISED US TO SLOW TO 200 KTS FOR FLT BELOW THE CLASS B. WE DO NOT KNOW IF WE WERE UNDER CLASS B AT THIS POINT OR IF IT WAS MERELY A FRIENDLY ADVISORY. WE PROMPTLY SLOWED TO 200 KTS. IN RETROSPECT WE SHOULD HAVE PAID MORE ATTN TO THE LA AREA CHART. WHILE I BELIEVE SOME OF THE CLASS B BOUNDARIES ARE HARD TO DEFINE WE WOULD HAVE HAD A BETTER PICTURE WHEN WE WERE GETTING CLOSE. SUPPLEMENTAL INFO FROM ACN 710463: I ALWAYS THOUGHT WHEN ON AN IFR FLT PLAN BEING VECTORED IN AND AROUND CLASS B AIRSPACE YOU DIDN'T HAVE TO COMPLY WITH THE 200 KTS. I WAS WRONG.
Data retrieved from NASA's ASRS site as of January 2009 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.