Flight crew of light transport had TCASII RA. Climbed 500 ft to clear RA.

Attributes
ACN	199015
Time
Date	199201
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : orw
State Reference	CT
Altitude	msl bound lower : 14000 msl bound upper : 14500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 1000
ASRS Report	199015
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0 vertical : 900
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

ATC advised that company light transport had us in sight and would be passing under us. I had aircraft on TCASII but could not see aircraft visually. I then received a TCASII TA followed by a RA to climb. We departed our assigned altitude to follow RA. I visually contacted company aircraft as it passed under us. I estimate less than 500 ft. TCASII showed it at 13600 our assigned altitude was 14000. RA climbed us to 14500. No ATC separation was lost as reported by ATC.

Original NASA ASRS Text

Title: FLC OF LTT HAD TCASII RA. CLBED 500 FT TO CLR RA.

Narrative: ATC ADVISED THAT COMPANY LTT HAD US IN SIGHT AND WOULD BE PASSING UNDER US. I HAD ACFT ON TCASII BUT COULD NOT SEE ACFT VISUALLY. I THEN RECEIVED A TCASII TA FOLLOWED BY A RA TO CLB. WE DEPARTED OUR ASSIGNED ALT TO FOLLOW RA. I VISUALLY CONTACTED COMPANY ACFT AS IT PASSED UNDER US. I ESTIMATE LESS THAN 500 FT. TCASII SHOWED IT AT 13600 OUR ASSIGNED ALT WAS 14000. RA CLBED US TO 14500. NO ATC SEPARATION WAS LOST AS RPTED BY ATC.

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.