A widebody transport air carrier took evasive action in response to TCASII.

Attributes
ACN	214679
Time
Date	199207
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sel
State Reference	FO
Altitude	msl bound lower : 8000 msl bound upper : 8300
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sel
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Flight Phase	descent : approach
Route In Use	arrival other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 11000 flight time type : 600
ASRS Report	214679
Person 2
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : instrument pilot : flight engineer pilot : atp pilot : cfi pilot : commercial
ASRS Report	214683
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 900
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

We were being radar vectored for approach to kimpo by seoul approach. We had just leveled off at 8000 heading northwest when TCASII noted a conflict. It almost immediately commanded a climb, which I instructed the copilot to execute. We immediately climbed 300 ft to 8300 ft and simultaneously advised seoul approach that we were climbing to avoid a TCASII conflict. We were subsequently advised by approach that we had traffic level at 7000 ft. This was confirmed by TCASII. Returned to 8000 ft with no further incident.

Original NASA ASRS Text

Title: A WDB ACR TOOK EVASIVE ACTION IN RESPONSE TO TCASII.

Narrative: WE WERE BEING RADAR VECTORED FOR APCH TO KIMPO BY SEOUL APCH. WE HAD JUST LEVELED OFF AT 8000 HDG NW WHEN TCASII NOTED A CONFLICT. IT ALMOST IMMEDIATELY COMMANDED A CLB, WHICH I INSTRUCTED THE COPLT TO EXECUTE. WE IMMEDIATELY CLBED 300 FT TO 8300 FT AND SIMULTANEOUSLY ADVISED SEOUL APCH THAT WE WERE CLBING TO AVOID A TCASII CONFLICT. WE WERE SUBSEQUENTLY ADVISED BY APCH THAT WE HAD TFC LEVEL AT 7000 FT. THIS WAS CONFIRMED BY TCASII. RETURNED TO 8000 FT WITH NO FURTHER INCIDENT.

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.