A CL65 flight crew receives a TCASII RA while at cruise altitude in vicinity of ZBW ZNY airspace.

Attributes
ACN	587795
Time
Date	200307
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : btv.airport
State Reference	VT
Altitude	msl bound lower : 26300 msl bound upper : 27000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : enroute altitude change cruise : level
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zbw.artcc
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : atp
Experience	flight time last 90 days : 180 flight time total : 16500 flight time type : 180
ASRS Report	587795
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : airborne critical non adherence : published procedure non adherence : required legal separation
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	flight crew : returned to assigned altitude
Supplementary
Problem Areas	Airspace Structure ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Center had vectored us direct btv. Then we were told by center to turn 30S degree left. On that heading, we received a TCASII RA, 'descend' message. We descended from the assigned FL270 to FL263 before returning to FL270. We notified center of the deviation.

Original NASA ASRS Text

Title: A CL65 FLT CREW RECEIVES A TCASII RA WHILE AT CRUISE ALT IN VICINITY OF ZBW ZNY AIRSPACE.

Narrative: CTR HAD VECTORED US DIRECT BTV. THEN WE WERE TOLD BY CTR TO TURN 30S DEG L. ON THAT HDG, WE RECEIVED A TCASII RA, 'DSND' MESSAGE. WE DSNDED FROM THE ASSIGNED FL270 TO FL263 BEFORE RETURNING TO FL270. WE NOTIFIED CTR OF THE DEV.

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.