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A VFR twin turboprop climbs prematurely and enters N90's class B while inside the 20 NM arc. Aircraft had been at 2500 ft with expected climb clearance at 20 DME. Base of class B was 3000 ft.
| Attributes | |
| ACN | 395820 |
| Time | |
| Date | 199803 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : teb |
| State Reference | NJ |
| Altitude | msl bound lower : 2500 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 7000 flight time type : 650 |
| ASRS Report | 395820 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Events | |
| Anomaly | non adherence : clearance non adherence : far other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
Remained below class B airspace while awaiting approval to climb through at 20 DME. I started to climb from 2500 ft to 13500 ft. The controller advised that I started my climb 4 mi too soon, while I was still in class B airspace. I stated that my DME reflected 20 mi and he replied that I was mistaken, but not to be concerned about receiving any paperwork, just watch out next time. The problem was not using my dead reckoning abilities to make sure I was outside class B airspace as a back up to my DME.
Original NASA ASRS Text
Title: A VFR TWIN TURBOPROP CLBS PREMATURELY AND ENTERS N90'S CLASS B WHILE INSIDE THE 20 NM ARC. ACFT HAD BEEN AT 2500 FT WITH EXPECTED CLB CLRNC AT 20 DME. BASE OF CLASS B WAS 3000 FT.
Narrative: REMAINED BELOW CLASS B AIRSPACE WHILE AWAITING APPROVAL TO CLB THROUGH AT 20 DME. I STARTED TO CLB FROM 2500 FT TO 13500 FT. THE CTLR ADVISED THAT I STARTED MY CLB 4 MI TOO SOON, WHILE I WAS STILL IN CLASS B AIRSPACE. I STATED THAT MY DME REFLECTED 20 MI AND HE REPLIED THAT I WAS MISTAKEN, BUT NOT TO BE CONCERNED ABOUT RECEIVING ANY PAPERWORK, JUST WATCH OUT NEXT TIME. THE PROB WAS NOT USING MY DEAD RECKONING ABILITIES TO MAKE SURE I WAS OUTSIDE CLASS B AIRSPACE AS A BACK UP TO MY DME.
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.