Helicopter X had near midair collision with aircraft Y. See and avoid concept.

Attributes
ACN	159938
Time
Date	199010
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : alb
State Reference	NY
Altitude	msl bound lower : 6000 msl bound upper : 6200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw tracon : alb
Operator	other
Make Model Name	Helicopter
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : direct
Flight Plan	VFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	159938
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	conflict : nmac
Independent Detector	other controllera
Resolutory Action	flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 0 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Helicopter X on V72 southwest of alb was handed off to ZBW and frequency changed. No observed traffic in his route of flight (6000'). Below 6000' is a non radar procedure alert and is climbing. I look and see aircraft Y 6200' VFR mode 'O' in his face. Helicopter X said he had almost hit, 'really close.' the ZBW controller didn't see it until he was that close. The mode C was just turned on. I honestly saw nothing prior to frequency change.

Original NASA ASRS Text

Title: HELICOPTER X HAD NMAC WITH ACFT Y. SEE AND AVOID CONCEPT.

Narrative: HELI X ON V72 SW OF ALB WAS HANDED OFF TO ZBW AND FREQ CHANGED. NO OBSERVED TFC IN HIS RTE OF FLT (6000'). BELOW 6000' IS A NON RADAR PROC ALERT AND IS CLBING. I LOOK AND SEE ACFT Y 6200' VFR MODE 'O' IN HIS FACE. HELI X SAID HE HAD ALMOST HIT, 'REALLY CLOSE.' THE ZBW CTLR DIDN'T SEE IT UNTIL HE WAS THAT CLOSE. THE MODE C WAS JUST TURNED ON. I HONESTLY SAW NOTHING PRIOR TO FREQ CHANGE.

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.