Air carrier receives TCASII RA, climbs as commanded.

Attributes
ACN	175880
Time
Date	199104
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : orw
State Reference	CT
Altitude	msl bound lower : 23000 msl bound upper : 23300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Plan	IFR
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 : 18000 flight time type : 11500
ASRS Report	175880
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 225 flight time total : 7200 flight time type : 3600
ASRS Report	176035
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : published procedure non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 18000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

We were inbound to orw VOR at FL230. Bos center descended an light transport jet through our altitude. He came at us from 11 O'clock with a high rate of closure. TCAS went from TA to RA almost simultaneously. It commanded a 1500-2000 FPM climb. I complied. As soon as the nose of the aircraft was up, TCAS announced 'clear of traffic.' we leveled off at FL233, advised ATC of our compliance with a TCAS RA, and descended to FL230.

Original NASA ASRS Text

Title: ACR RECEIVES TCASII RA, CLIMBS AS COMMANDED.

Narrative: WE WERE INBND TO ORW VOR AT FL230. BOS CTR DSNDED AN LTT JET THROUGH OUR ALT. HE CAME AT US FROM 11 O'CLOCK WITH A HIGH RATE OF CLOSURE. TCAS WENT FROM TA TO RA ALMOST SIMULTANEOUSLY. IT COMMANDED A 1500-2000 FPM CLB. I COMPLIED. AS SOON AS THE NOSE OF THE ACFT WAS UP, TCAS ANNOUNCED 'CLR OF TFC.' WE LEVELED OFF AT FL233, ADVISED ATC OF OUR COMPLIANCE WITH A TCAS RA, AND DSNDED TO FL230.

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.