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Pilot of a C172 inadvertently penetrated class B airspace due to miscalculating the class B floor altitude under which he departed on a VFR flight.
| Attributes | |
| ACN | 429270 |
| Time | |
| Date | 199902 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mmu.airport |
| State Reference | NJ |
| Altitude | msl bound lower : 3000 msl bound upper : 3500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90.tracon |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Plan | VFR |
| Aircraft 2 | |
| Flight Phase | cruise : level |
| Route In Use | departure : vfr |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 8000 flight time type : 300 |
| ASRS Report | 429270 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Events | |
| Anomaly | airspace violation : entry non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : became reoriented flight crew : exited penetrated airspace |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Departed morristown airport, nj, VFR (cavu) en route to baltimore, md. Requested and tower approved runway 5, left downwind departure on course +/-250 degrees. Climbed at 500 FPM to 3500 ft en route. Checked new york sectional for floor of class B airspace and confused philadelphia 7000/4000 ft with new york 7000/3000 ft outer rings. Realized that on way inbound class B clearance was received at 3500 ft. Rechked map. Immediately descended below 3000 ft until clear of class B airspace.
Original NASA ASRS Text
Title: PLT OF A C172 INADVERTENTLY PENETRATED CLASS B AIRSPACE DUE TO MISCALCULATING THE CLASS B FLOOR ALT UNDER WHICH HE DEPARTED ON A VFR FLT.
Narrative: DEPARTED MORRISTOWN ARPT, NJ, VFR (CAVU) ENRTE TO BALTIMORE, MD. REQUESTED AND TWR APPROVED RWY 5, L DOWNWIND DEP ON COURSE +/-250 DEGS. CLBED AT 500 FPM TO 3500 FT ENRTE. CHKED NEW YORK SECTIONAL FOR FLOOR OF CLASS B AIRSPACE AND CONFUSED PHILADELPHIA 7000/4000 FT WITH NEW YORK 7000/3000 FT OUTER RINGS. REALIZED THAT ON WAY INBOUND CLASS B CLRNC WAS RECEIVED AT 3500 FT. RECHKED MAP. IMMEDIATELY DSNDED BELOW 3000 FT UNTIL CLR OF CLASS B AIRSPACE.
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.