Large transport has TCASII RA to climb.

Attributes
ACN	243502
Time
Date	199306
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : pvd
State Reference	RI
Altitude	msl bound lower : 11000 msl bound upper : 11300
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute airway : zbw
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : flight engineer pilot : instrument pilot : atp
Experience	flight time last 90 days : 100 flight time total : 15000 flight time type : 7000
ASRS Report	243502
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 1500 vertical : 700
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

Our aircraft was overhead pvd VOR at 11000 ft MSL eastbound. Center advised VFR traffic at 10500 ft MSL, wbound, 1 O'clock position, 8 mi, in contact with him. Traffic appeared on TCASII showing minus 400 ft. This was followed shortly by RA of 'climb.' we initiated a climb and advised center of such (we never acquired traffic visually). Center advised, 'negative, maintain 11000 ft.' we had climbed to 11300 ft. By that time traffic had passed, and we immediately returned to 11000 ft.

Original NASA ASRS Text

Title: LGT HAS TCASII RA TO CLB.

Narrative: OUR ACFT WAS OVERHEAD PVD VOR AT 11000 FT MSL EBOUND. CTR ADVISED VFR TFC AT 10500 FT MSL, WBOUND, 1 O'CLOCK POS, 8 MI, IN CONTACT WITH HIM. TFC APPEARED ON TCASII SHOWING MINUS 400 FT. THIS WAS FOLLOWED SHORTLY BY RA OF 'CLB.' WE INITIATED A CLB AND ADVISED CTR OF SUCH (WE NEVER ACQUIRED TFC VISUALLY). CTR ADVISED, 'NEGATIVE, MAINTAIN 11000 FT.' WE HAD CLBED TO 11300 FT. BY THAT TIME TFC HAD PASSED, AND WE IMMEDIATELY RETURNED TO 11000 FT.

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.