Air carrier on approach has conflict with light transport and small transport.

Attributes
ACN	167892
Time
Date	199101
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : hpn
State Reference	NY
Altitude	msl bound lower : 3000 msl bound upper : 3500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 20000 flight time type : 5000
ASRS Report	167892
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 3800 flight time type : 1260
ASRS Report	167763
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 2000 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

While being vectored from brezy intersection for approach to hpn, was advised of VFR traffic at my 11 O'clock, 2700' southbound. Informed ATC that traffic was not in sight. ATC also said that traffic was an light transport jet and an small transport. First officer was flying. I left ATC frequency to call company. During this call TCAS issued an RA, with instructions to climb. I broke off company communication, instructed first officer to initiate climb, and directed my attention to my 9 O'clock, where target had appeared. Saw light transport and small transport flying in formation, in a fast climbing right turn toward me. RA ceased at 3300'. Evasive maneuver topped at 3500'. Informed westchester approach of conflict. Was advised that conflicting traffic was operating 'VFR, and and do whatever they want to,' approach control then xferred my flight to hpn tower.

Original NASA ASRS Text

Title: ACR ON APCH HAS CONFLICT WITH LTT AND SMT.

Narrative: WHILE BEING VECTORED FROM BREZY INTXN FOR APCH TO HPN, WAS ADVISED OF VFR TFC AT MY 11 O'CLOCK, 2700' SBND. INFORMED ATC THAT TFC WAS NOT IN SIGHT. ATC ALSO SAID THAT TFC WAS AN LTT JET AND AN SMT. F/O WAS FLYING. I LEFT ATC FREQ TO CALL COMPANY. DURING THIS CALL TCAS ISSUED AN RA, WITH INSTRUCTIONS TO CLB. I BROKE OFF COMPANY COM, INSTRUCTED F/O TO INITIATE CLB, AND DIRECTED MY ATTN TO MY 9 O'CLOCK, WHERE TARGET HAD APPEARED. SAW LTT AND SMT FLYING IN FORMATION, IN A FAST CLBING RIGHT TURN TOWARD ME. RA CEASED AT 3300'. EVASIVE MANEUVER TOPPED AT 3500'. INFORMED WESTCHESTER APCH OF CONFLICT. WAS ADVISED THAT CONFLICTING TFC WAS OPERATING 'VFR, AND AND DO WHATEVER THEY WANT TO,' APCH CTL THEN XFERRED MY FLT TO HPN TWR.

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.