M20 pilot reported a near midair collision with a B777 after being cleared into jfk's class B airspa...

Attributes
ACN	586361
Time
Date	200306
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : jfk.vor
State Reference	NY
Altitude	msl single value : 6500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90.tracon
Operator	general aviation : personal
Make Model Name	M-20 K (231)
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	None
Aircraft 2
Controlling Facilities	tracon : n90.tracon
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial climbout : intermediate altitude climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot oversight : pic
Qualification	pilot : multi engine pilot : private pilot : instrument
Experience	flight time last 90 days : 24 flight time total : 1324 flight time type : 20
ASRS Report	586361
Person 2
Affiliation	government : faa
Function	controller : departure controller : approach
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne critical non adherence : published procedure non adherence : required legal separation other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	controller : issued advisory flight crew : took evasive action
Miss Distance	vertical : 250
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Ambiguous

Narrative:

I departed ack airport on an instrument flight plan to pne. After clearing the ack airport, I cancelled the IFR flight plan and switched to a VFR flight to pne with flight following to pne at 6500 ft. This incident occurred in the class B airspace surrounding jfk airport. I was cleared into the class B airspace at 6500 ft by ATC going in a westerly direction. The incident occurred over the water approximately 15 mi sse of jfk airport. I was advised by ATC that an airliner (perhaps a B-777) was flying towards me at 6000 ft. I observed the airliner flying in a direct path towards my aircraft. It appeared that the aircraft was climbing towards my altitude. I diverted to the left, and lowered my altitude from 6500 ft MSL. My explanation is the observation that the airliner was on a direct collision course to my aircraft. I attempted to avoid what could have been a mid-air collision.

Original NASA ASRS Text

Title: M20 PLT RPTED A NMAC WITH A B777 AFTER BEING CLRED INTO JFK'S CLASS B AIRSPACE.

Narrative: I DEPARTED ACK ARPT ON AN INST FLT PLAN TO PNE. AFTER CLRING THE ACK ARPT, I CANCELLED THE IFR FLT PLAN AND SWITCHED TO A VFR FLT TO PNE WITH FLT FOLLOWING TO PNE AT 6500 FT. THIS INCIDENT OCCURRED IN THE CLASS B AIRSPACE SURROUNDING JFK ARPT. I WAS CLRED INTO THE CLASS B AIRSPACE AT 6500 FT BY ATC GOING IN A WESTERLY DIRECTION. THE INCIDENT OCCURRED OVER THE WATER APPROX 15 MI SSE OF JFK ARPT. I WAS ADVISED BY ATC THAT AN AIRLINER (PERHAPS A B-777) WAS FLYING TOWARDS ME AT 6000 FT. I OBSERVED THE AIRLINER FLYING IN A DIRECT PATH TOWARDS MY ACFT. IT APPEARED THAT THE ACFT WAS CLBING TOWARDS MY ALT. I DIVERTED TO THE L, AND LOWERED MY ALT FROM 6500 FT MSL. MY EXPLANATION IS THE OBSERVATION THAT THE AIRLINER WAS ON A DIRECT COLLISION COURSE TO MY ACFT. I ATTEMPTED TO AVOID WHAT COULD HAVE BEEN A MID-AIR COLLISION.

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.

M20 pilot reported a near midair collision with a B777 after being cleared into jfk's class B airspace.