An AC90 pilot experienced an near midair collision flying below new york class B airspace.

Attributes
ACN	519532
Time
Date	200107
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ldj.airport
State Reference	NJ
Altitude	agl single value : 700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : roc.tower
Operator	general aviation : corporate
Make Model Name	Turbo Commander 690C
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial
Flight Plan	VFR
Aircraft 2
Make Model Name	Cessna Aircraft Undifferentiated or Other Model
Flight Phase	descent : intermediate altitude
Flight Plan	VFR
Person 1
Affiliation	company : corporate
Function	flight crew : single pilot
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 25 flight time total : 8000 flight time type : 800
ASRS Report	519532
Person 2
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 500 vertical : 75
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

I was on departure from ldj VFR planning to activate a filed IFR flight plan as soon as I was clear of the new york class B airspace. The bottom of the new york class B airspace is 800 ft AGL rising to 1500 ft AGL 3 mi or so west of ldj. I was level beneath the 800 ft portion when I saw and evaded a twin cessna of some type. It would be nice if there were some sort of corridor higher than 800 ft to the west so traffic was not so compressed and close to houses. I don't know if a corridor could be engineered without interfering with ewr, but it would sure be useful, both from a noise and a safety standpoint.

Original NASA ASRS Text

Title: AN AC90 PLT EXPERIENCED AN NMAC FLYING BELOW NEW YORK CLASS B AIRSPACE.

Narrative: I WAS ON DEP FROM LDJ VFR PLANNING TO ACTIVATE A FILED IFR FLT PLAN AS SOON AS I WAS CLR OF THE NEW YORK CLASS B AIRSPACE. THE BOTTOM OF THE NEW YORK CLASS B AIRSPACE IS 800 FT AGL RISING TO 1500 FT AGL 3 MI OR SO W OF LDJ. I WAS LEVEL BENEATH THE 800 FT PORTION WHEN I SAW AND EVADED A TWIN CESSNA OF SOME TYPE. IT WOULD BE NICE IF THERE WERE SOME SORT OF CORRIDOR HIGHER THAN 800 FT TO THE W SO TFC WAS NOT SO COMPRESSED AND CLOSE TO HOUSES. I DON'T KNOW IF A CORRIDOR COULD BE ENGINEERED WITHOUT INTERFERING WITH EWR, BUT IT WOULD SURE BE USEFUL, BOTH FROM A NOISE AND A SAFETY STANDPOINT.

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.