Flight crew experiences TCASII RA with VFR lear jet maneuvering on the airway.

Attributes
ACN	321343
Time
Date	199511
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : roc
State Reference	NY
Altitude	msl bound lower : 16000 msl bound upper : 17200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob
Operator	common carrier : air carrier
Make Model Name	SF 340A
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Gates Learjet Corp Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 13500 flight time type : 5000
ASRS Report	321343
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 220 flight time total : 5000 flight time type : 2000
ASRS Report	321348
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 500
Supplementary
Air Traffic Incident	other

Narrative:

ATC and TCASII both announced VFR lear jet approximately 11:30 O'clock 5 mi. Lear's altitude was varying from minus 500 ft to our own level. TCASII issued RA to climb which we followed. Lear appeared to continue climb and TCASII issued 'increase climb' RA. ATC suggested right turn which we followed. Maximum altitude deviation was 1200 ft. Never saw lear.

Original NASA ASRS Text

Title: FLC EXPERIENCES TCASII RA WITH VFR LEAR JET MANEUVERING ON THE AIRWAY.

Narrative: ATC AND TCASII BOTH ANNOUNCED VFR LEAR JET APPROX 11:30 O'CLOCK 5 MI. LEAR'S ALT WAS VARYING FROM MINUS 500 FT TO OUR OWN LEVEL. TCASII ISSUED RA TO CLB WHICH WE FOLLOWED. LEAR APPEARED TO CONTINUE CLB AND TCASII ISSUED 'INCREASE CLB' RA. ATC SUGGESTED R TURN WHICH WE FOLLOWED. MAX ALTDEV WAS 1200 FT. NEVER SAW LEAR.

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.