Large transport has TCASII RA, responds.

Attributes
ACN	263900
Time
Date	199310
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : det
State Reference	MI
Altitude	msl bound lower : 29000 msl bound upper : 29700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 240 flight time total : 10000 flight time type : 5500
ASRS Report	263900
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
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
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

While in cruise at FL290 spotted traffic on TCASII 15 mi ahead and 1000 ft below, climbing. Then we got an RA for climb from TCASII. Captain informed ZOB and I (PF) started the climb. We reached 29700 ft before we got clear of conflict, then we came back down to FL290. ATC was not upset about it, and no further action was required. TCASII has proved to be a life saver for me twice now. It's definitely doing what it's supposed to do.

Original NASA ASRS Text

Title: LGT HAS TCASII RA, RESPONDS.

Narrative: WHILE IN CRUISE AT FL290 SPOTTED TFC ON TCASII 15 MI AHEAD AND 1000 FT BELOW, CLBING. THEN WE GOT AN RA FOR CLB FROM TCASII. CAPT INFORMED ZOB AND I (PF) STARTED THE CLB. WE REACHED 29700 FT BEFORE WE GOT CLR OF CONFLICT, THEN WE CAME BACK DOWN TO FL290. ATC WAS NOT UPSET ABOUT IT, AND NO FURTHER ACTION WAS REQUIRED. TCASII HAS PROVED TO BE A LIFE SAVER FOR ME TWICE NOW. IT'S DEFINITELY DOING WHAT IT'S SUPPOSED TO DO.

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.