Close proximity air carrier-large transport GA-small aircraft southeast of jfk.

Attributes
ACN	146690
Time
Date	199005
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : jfk
State Reference	NY
Altitude	msl bound lower : 12500 msl bound upper : 12500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny tower : lfmn
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	None
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 140 flight time total : 2200
ASRS Report	146690
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 1000 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

My routing was hfd direct panze intersection direct 26N at 12500'. I was checking my charts/routing and when I looked for traffic, the large transport was off my right side, slightly behind, and slightly above. My first impression was that the large transport was climbing, but I then watched it descend clear of me. I do not know if ATC had informed the flight of my position or whether or not they were unable to see me. I could have likewise maintained better vigilance for traffic, but the large transport flight path from slightly behind makes it slightly more difficult, while I was at the flight crew's 12 O'clock position. In conclusion, if the flight crew was not told of my position, there is a definite ATC problem. If the crew was told of my near 12 O'clock position and indicated altitude of 12500', they could have, and should have taken action sooner.

Original NASA ASRS Text

Title: CLOSE PROX ACR-LGT GA-SMA SE OF JFK.

Narrative: MY RTING WAS HFD DIRECT PANZE INTXN DIRECT 26N AT 12500'. I WAS CHKING MY CHARTS/RTING AND WHEN I LOOKED FOR TFC, THE LGT WAS OFF MY R SIDE, SLIGHTLY BEHIND, AND SLIGHTLY ABOVE. MY FIRST IMPRESSION WAS THAT THE LGT WAS CLBING, BUT I THEN WATCHED IT DSND CLR OF ME. I DO NOT KNOW IF ATC HAD INFORMED THE FLT OF MY POS OR WHETHER OR NOT THEY WERE UNABLE TO SEE ME. I COULD HAVE LIKEWISE MAINTAINED BETTER VIGILANCE FOR TFC, BUT THE LGT FLT PATH FROM SLIGHTLY BEHIND MAKES IT SLIGHTLY MORE DIFFICULT, WHILE I WAS AT THE FLT CREW'S 12 O'CLOCK POS. IN CONCLUSION, IF THE FLT CREW WAS NOT TOLD OF MY POS, THERE IS A DEFINITE ATC PROB. IF THE CREW WAS TOLD OF MY NEAR 12 O'CLOCK POS AND INDICATED ALT OF 12500', THEY COULD HAVE, AND SHOULD HAVE TAKEN ACTION SOONER.

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.