TCASII TA distraction. Flight crew looking for the traffic descended below assigned 9000.

Attributes
ACN	197777
Time
Date	199112
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : clt
State Reference	NC
Altitude	msl bound lower : 9000 msl bound upper : 9000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : clt
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent : approach descent other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 220 flight time total : 8000 flight time type : 4000
ASRS Report	197777
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 220 flight time total : 14000 flight time type : 10000
ASRS Report	197931
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Looking for traffic outside after TCASII showed close traffic. Went through 9000 ft by 270 ft immediately climbed back up. Always stabilize aircraft before both heads are outside.

Original NASA ASRS Text

Title: TCASII TA DISTR. FLC LOOKING FOR THE TFC DSNDED BELOW ASSIGNED 9000.

Narrative: LOOKING FOR TFC OUTSIDE AFTER TCASII SHOWED CLOSE TFC. WENT THROUGH 9000 FT BY 270 FT IMMEDIATELY CLBED BACK UP. ALWAYS STABILIZE ACFT BEFORE BOTH HEADS ARE OUTSIDE.

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.